diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index a607f44..cf411a2 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,9 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="75ef5724-93bc-4ed4-82b2-ff12411188dc" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/gumtree/client.diff/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/gumtree/client.diff/pom.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/gumtree/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/gumtree/pom.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/classes/" />
     <ignored path="$PROJECT_DIR$/target/" />
@@ -66,10 +64,16 @@
         </entry>
       </file>
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/gumtree/pom.xml">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="247">
-              <caret line="77" column="15" selection-start-line="77" selection-start-column="15" selection-end-line="77" selection-end-column="15" />
+        <entry file="file://$PROJECT_DIR$/README.md">
+          <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+            <state split_layout="SPLIT">
+              <first_editor relative-caret-position="574">
+                <caret line="248" column="1" selection-start-line="248" selection-start-column="1" selection-end-line="248" selection-end-column="1" />
+                <folding>
+                  <element signature="e#3#21#0" expanded="true" />
+                </folding>
+              </first_editor>
+              <second_editor />
             </state>
           </provider>
         </entry>
@@ -191,7 +195,6 @@
         <option value="$PROJECT_DIR$/src/main/resources/config.yml" />
         <option value="$PROJECT_DIR$/python/javaDS.py" />
         <option value="$PROJECT_DIR$/python/otherDatasets.py" />
-        <option value="$PROJECT_DIR$/README.md" />
         <option value="$PROJECT_DIR$/python/main.py" />
         <option value="$PROJECT_DIR$/.gitignore" />
         <option value="$PROJECT_DIR$/gumtree/core/src/test/java/com/github/gumtreediff/test/TreeLoader.java" />
@@ -216,6 +219,7 @@
         <option value="$PROJECT_DIR$/.travis.yml" />
         <option value="$PROJECT_DIR$/gumtree/pom.xml" />
         <option value="$PROJECT_DIR$/gumtree/client.diff/pom.xml" />
+        <option value="$PROJECT_DIR$/README.md" />
       </list>
     </option>
   </component>
@@ -556,7 +560,7 @@
     <frame x="0" y="0" width="1680" height="1050" extended-state="0" />
     <editor active="true" />
     <layout>
-      <window_info content_ui="combo" id="Project" order="0" sideWeight="0.49315068" visible="true" weight="0.30708182" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" sideWeight="0.49315068" visible="true" weight="0.30708182" />
       <window_info id="Structure" order="1" sideWeight="0.5068493" side_tool="true" visible="true" weight="0.30708182" />
       <window_info id="Image Layers" order="2" />
       <window_info id="Designer" order="3" />
@@ -570,7 +574,7 @@
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
       <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info active="true" anchor="bottom" id="Terminal" order="7" sideWeight="0.71428573" visible="true" weight="0.32959184" />
+      <window_info anchor="bottom" id="Terminal" order="7" sideWeight="0.71428573" visible="true" weight="0.32959184" />
       <window_info anchor="bottom" id="Event Log" order="8" sideWeight="0.50183153" side_tool="true" weight="0.4" />
       <window_info anchor="bottom" id="Version Control" order="9" />
       <window_info anchor="bottom" id="Messages" order="10" sideWeight="0.498779" weight="0.32959184" />
@@ -813,24 +817,6 @@
         <state relative-caret-position="-9913" />
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/README.md">
-      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
-        <state split_layout="SPLIT">
-          <first_editor relative-caret-position="169">
-            <caret line="82" column="15" selection-start-line="82" selection-start-column="8" selection-end-line="82" selection-end-column="15" />
-            <folding>
-              <element signature="e#3#21#0" expanded="true" />
-            </folding>
-          </first_editor>
-          <second_editor />
-        </state>
-      </provider>
-      <provider editor-type-id="text-editor">
-        <state relative-caret-position="1740">
-          <caret line="120" column="133" selection-start-line="120" selection-start-column="133" selection-end-line="120" selection-end-column="133" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/.gitignore">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="240">
@@ -1125,13 +1111,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/gumtree/core/src/test/java/com/github/gumtreediff/test/TestActionIo.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="90">
-          <caret line="36" column="13" selection-start-line="36" selection-start-column="13" selection-end-line="36" selection-end-column="13" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/richedit/pom.xml">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="577">
@@ -1155,8 +1134,33 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/gumtree/pom.xml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="247">
-          <caret line="77" column="15" selection-start-line="77" selection-start-column="15" selection-end-line="77" selection-end-column="15" />
+        <state relative-caret-position="1309">
+          <caret line="146" column="31" selection-start-line="146" selection-start-column="31" selection-end-line="146" selection-end-column="31" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/gumtree/core/src/test/java/com/github/gumtreediff/test/TestActionIo.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="90">
+          <caret line="36" column="13" selection-start-line="36" selection-start-column="13" selection-end-line="36" selection-end-column="13" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/README.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="SPLIT">
+          <first_editor relative-caret-position="574">
+            <caret line="248" column="1" selection-start-line="248" selection-start-column="1" selection-end-line="248" selection-end-column="1" />
+            <folding>
+              <element signature="e#3#21#0" expanded="true" />
+            </folding>
+          </first_editor>
+          <second_editor />
+        </state>
+      </provider>
+      <provider editor-type-id="text-editor">
+        <state relative-caret-position="1740">
+          <caret line="120" column="133" selection-start-line="120" selection-start-column="133" selection-end-line="120" selection-end-column="133" />
         </state>
       </provider>
     </entry>
diff --git a/README.md b/README.md
index e2a7d6a..48d42e5 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,20 @@
 # Code of FixMiner
 
 Reference: [FixMiner: Mining Relevant Fix Patterns for Automated Program Repair](http://arxiv.org/pdf/1810.01791) (Empirical Software Engineering, [doi:10.1007/s10664-019-09780-z](https://doi.org/10.1007/s10664-019-09780-z))
+## Citing FixMiner
 
+You can cite FixMiner using the following bibtex:
+
+```
+@article{koyuncu2020fixminer,
+  title={Fixminer: Mining relevant fix patterns for automated program repair},
+  author={Koyuncu, Anil and Liu, Kui and Bissyand{\'e}, Tegawend{\'e} F and Kim, Dongsun and Klein, Jacques and Monperrus, Martin and Le Traon, Yves},
+  journal={Empirical Software Engineering},
+  pages={1--45},
+  year={2020},
+  publisher={Springer}
+}
+  ```
 # FixMiner
 
 * [I. Introduction of FixMiner](#user-content-i-introduction)
@@ -237,6 +250,3 @@ Usage
 
   ```
 
-
-
-