diff --git a/pom.xml b/pom.xml
index ddec5368930dd767259c061f6d32d5da09fd94e5..dc68618947fdd6b25a373e0d3392cdbe078815fb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -161,10 +161,6 @@
             <artifactId>commons-io</artifactId>
             <version>2.11.0</version>
         </dependency>
-<<<<<<< HEAD
-    </dependencies>
-
-=======
 
         <dependency>
             <groupId>org.mapstruct</groupId>
@@ -175,15 +171,12 @@
     </dependencies>
 
 
->>>>>>> 9e1c76c (Categories of PDF initialized)
     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
-<<<<<<< HEAD
-=======
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
@@ -199,7 +192,6 @@
                     </annotationProcessorPaths>
                 </configuration>
             </plugin>
->>>>>>> 9e1c76c (Categories of PDF initialized)
         </plugins>
     </build>
 
diff --git a/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java b/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
index d727d088420f8bd13a86d10e728db9da32581dd4..b5e1d07c7139a5acd349123c7f15ffffc29ac987 100644
--- a/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
+++ b/src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java
@@ -1,11 +1,8 @@
 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.GrobidClient;
-<<<<<<< HEAD
-=======
 import com.dre0059.articleprocessor.model.Category;
 import com.dre0059.articleprocessor.repository.CategoryRepository;
->>>>>>> 9e1c76c (Categories of PDF initialized)
 import com.dre0059.articleprocessor.service.HeaderService;
 
 import com.dre0059.articleprocessor.service.ReferenceService;
@@ -18,11 +15,8 @@ import org.springframework.web.multipart.MultipartFile;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
-<<<<<<< HEAD
-=======
 import java.util.List;
 import java.util.Optional;
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
 @Controller
 @RequestMapping("/api/grobid")
@@ -30,13 +24,6 @@ public class FileUploadController {
     private final GrobidClient grobidClient;
     private final HeaderService headerService;
     private final ReferenceService referenceService;
-<<<<<<< HEAD
-
-    public FileUploadController(GrobidClient grobidClient, HeaderService headerService, ReferenceService referenceService) {
-        this.grobidClient = grobidClient;
-        this.headerService = headerService;
-        this.referenceService = referenceService;
-=======
     private final CategoryRepository categoryRepository;
 
     public FileUploadController(GrobidClient grobidClient, HeaderService headerService, ReferenceService referenceService, CategoryRepository categoryRepository) {
@@ -44,35 +31,24 @@ public class FileUploadController {
         this.headerService = headerService;
         this.referenceService = referenceService;
         this.categoryRepository = categoryRepository;
->>>>>>> 9e1c76c (Categories of PDF initialized)
     }
 
     @GetMapping("/upload")
     public String showUploadForm(Model model) {
-<<<<<<< HEAD
-=======
         List<Category> categories = categoryRepository.findAll();
         model.addAttribute("categories", categories);
->>>>>>> 9e1c76c (Categories of PDF initialized)
         return "upload";  // vracia upload.html
     }
 
     @PostMapping("/upload")
     @ResponseBody
-<<<<<<< HEAD
-    public ResponseEntity<String> handleFileUpload(@RequestParam("file") MultipartFile file) {
-=======
     public ResponseEntity<String> handleFileUpload(@RequestParam("file") MultipartFile file, @RequestParam("category") String category) {
->>>>>>> 9e1c76c (Categories of PDF initialized)
         if (file.isEmpty()) {
             return ResponseEntity.badRequest().body("No file uploaded!");
         }
 
         System.out.println("Received file: " + file.getOriginalFilename());
-<<<<<<< HEAD
-=======
         System.out.println("Received category: " + category);
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
         try {
             // Vytvorenie dočasného súboru
@@ -88,13 +64,6 @@ public class FileUploadController {
             String header = grobidClient.processHeader(tmpFile);
             String references = grobidClient.processReferences(tmpFile);
 
-<<<<<<< HEAD
-            headerService.processHeader(header);
-            referenceService.extractReferences(references);
-
-            //System.out.println(header);
-            System.out.println(references);
-=======
             String categoryId = category.substring(0, 3);
             Optional<Category> categoryOptional = categoryRepository.findById(categoryId);
 
@@ -111,7 +80,6 @@ public class FileUploadController {
             //System.out.println(references);
 
 
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
             tmpFile.delete();
 
diff --git a/src/main/java/com/dre0059/articleprocessor/model/Dokument.java b/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
index 27897d9c83d20eac631041c39dea5d289f314b3b..1e6e8dd456530be3d8f176a941997d87778aa1c7 100644
--- a/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
+++ b/src/main/java/com/dre0059/articleprocessor/model/Dokument.java
@@ -6,11 +6,6 @@ import org.hibernate.annotations.Cascade;
 import java.util.ArrayList;
 import java.util.List;
 
-<<<<<<< HEAD
-// TODO : int / boolean - či je PDF nahraté alebo je to dokument len z referencie
-//    1. references -
-=======
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
 @Entity
 @Table(name = "documents")
@@ -27,13 +22,10 @@ public class Dokument {
     private Integer publicationYear;
     private String doi;
 
-<<<<<<< HEAD
-=======
     @ManyToOne
     @JoinColumn(name = "category_id")
     private Category category;
 
->>>>>>> 9e1c76c (Categories of PDF initialized)
     // @Lob for huge text
     //@Column(name = "abstractText", columnDefinition = "TEXT")
     //private String abstractText;
@@ -79,28 +71,6 @@ public class Dokument {
     public void setAuthors(List<Author> authors) { this.authors = authors; }
     public void setTitle(String title) { this.title = title; }
     public void setTarget(String target) { this.target = target; }
-<<<<<<< HEAD
-
-    public void setPublicationYear(Integer publicationYear) {
-        this.publicationYear = publicationYear;
-    }
-
-    public void setDoi(String doi) {
-        this.doi = doi;
-    }
-
-    public void setStatus(String status) {
-        this.status = status;
-    }
-
-    public void setPublisher(String publisher) {
-        this.publisher = publisher;
-    }
-
-    public void setReferences(List<Reference> references) {
-        this.references = references;
-    }
-=======
     public void setPublicationYear(Integer publicationYear) {
         this.publicationYear = publicationYear;
     }
@@ -117,5 +87,4 @@ public class Dokument {
         this.references = references;
     }
     public void setCategory(Category category) { this.category = category;}
->>>>>>> 9e1c76c (Categories of PDF initialized)
 }
diff --git a/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java b/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
index b4b865f18f046db2d59552b4a225d0eedfbdc25f..30fea4d56f6c13168c7d65ed11496cae487daac0 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/HeaderService.java
@@ -1,15 +1,10 @@
 package com.dre0059.articleprocessor.service;
 
 import com.dre0059.articleprocessor.model.Author;
-<<<<<<< HEAD
-import com.dre0059.articleprocessor.model.Dokument;
-import com.dre0059.articleprocessor.repository.AuthorRepository;
-=======
 import com.dre0059.articleprocessor.model.Category;
 import com.dre0059.articleprocessor.model.Dokument;
 import com.dre0059.articleprocessor.repository.AuthorRepository;
 import com.dre0059.articleprocessor.repository.CategoryRepository;
->>>>>>> 9e1c76c (Categories of PDF initialized)
 import com.dre0059.articleprocessor.repository.DocumentRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -31,10 +26,7 @@ public class HeaderService {
     private final DocumentRepository documentRepository;
     private final AuthorRepository authorRepository;
     private final ReferenceService referenceService;
-<<<<<<< HEAD
-=======
     private final CategoryRepository categoryRepository;
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
     //public Dokument(String title, Integer year, String doi, String abstractText, Integer pages, String publisher) {
 
@@ -47,17 +39,6 @@ public class HeaderService {
     private List<Author> authorList = new ArrayList<>();
 
     private String author;
-<<<<<<< HEAD
-
-    @Autowired
-    public HeaderService(DocumentRepository documentRepository, AuthorRepository authorRepository, ReferenceService referenceService) {
-        this.documentRepository = documentRepository;
-        this.authorRepository = authorRepository;
-        this.referenceService = referenceService;
-    }
-
-    public void processHeader(String header){
-=======
     private Category category;
 
     @Autowired
@@ -69,7 +50,6 @@ public class HeaderService {
     }
 
     public void processHeader(String header, Optional<Category> category) {
->>>>>>> 9e1c76c (Categories of PDF initialized)
         this.title = this.parseHeaderFields(header, "title");
 
         if(!this.parseHeaderFields(header, "doi").equals("Not found")){
@@ -99,10 +79,6 @@ public class HeaderService {
         System.out.println("Author list before checking duplicity: " + authorList);
         System.out.println("Author last names before checking duplicity: " + authorLastNames);
 
-<<<<<<< HEAD
-        // tu dostávam error :
-=======
->>>>>>> 9e1c76c (Categories of PDF initialized)
         boolean headerDuplicity = documentRepository.existsByTitleAndAuthorsIn(title, authorLastNames);
 
         // check duplicity of the document
@@ -114,10 +90,6 @@ public class HeaderService {
         List<Author> savedAuthors = authorRepository.saveAll(authorList);
         Dokument dokument = new Dokument(title, year, doi, publisher, "PDF");
 
-<<<<<<< HEAD
-        dokument.setAuthors(savedAuthors);
-        this.documentRepository.save(dokument);
-=======
         //dokument.setCategory(category.get());
         dokument.setAuthors(savedAuthors);
 
@@ -125,7 +97,6 @@ public class HeaderService {
         category.ifPresent(dokument::setCategory);
 
         this.documentRepository.save(dokument); // output : Optional.empty
->>>>>>> 9e1c76c (Categories of PDF initialized)
 
         // set the document, which has the list of references
         referenceService.setFromDocument(dokument);
diff --git a/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java b/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
index 861dab3c32cab58f7b4372a74503d0bf1f63e1cc..a04ccf5acf2031cfcbe087b70161591e2a2d34c9 100644
--- a/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
+++ b/src/main/java/com/dre0059/articleprocessor/service/ReferenceService.java
@@ -1,39 +1,29 @@
 package com.dre0059.articleprocessor.service;
 
-import com.dre0059.articleprocessor.model.*;
-import com.dre0059.articleprocessor.repository.*;
-import jakarta.transaction.Transactional;
+import com.dre0059.articleprocessor.model.Author;
+import com.dre0059.articleprocessor.model.Dokument;
+import com.dre0059.articleprocessor.model.Reference;
+import com.dre0059.articleprocessor.repository.AuthorRepository;
+import com.dre0059.articleprocessor.repository.DocumentRepository;
+import com.dre0059.articleprocessor.repository.ReferenceRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.w3c.dom.Document;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathConstants;
-import javax.xml.xpath.XPathExpressionException;
 import javax.xml.xpath.XPathFactory;
-import java.io.IOException;
-import java.io.InputStream;
 import java.io.StringReader;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
-<<<<<<< HEAD
-// TODO :
-//  1. uloĹľiĹĄ prepojenie toDocument a fromDocument do tabuÄľky referencie
-//  2. vytiahnuť orderNumber z referencie (toto riešiť cez GROBID)
-//  3. aktuálne sa mi toDocument ukladá vždy ako nový.. ja ho potrebujem vyhľadať a na základe toho uložiť alebo prepojiť
-//  4. uložiť záznam do tabuľky references
-//  5. ak už bolo PDF raz uložené, uloží sa mi "null" článok, prepojený s autormi - VYRIESIT
-
-
-=======
->>>>>>> 9e1c76c (Categories of PDF initialized)
 @Service
 public class ReferenceService {