diff --git a/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateRefType.java b/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateRefType.java
index 84d66b1e..b8e9704a 100644
--- a/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateRefType.java
+++ b/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateRefType.java
@@ -15,6 +15,16 @@ public final class IntermediateRefType extends IntermediateType{
 
     private final List<IntermediateRefType> typParameters;
 
+    /**
+     * Caches the hashCode after first computation.
+     */
+    private int hashCode;
+
+    /**
+     * Caches the classSignature after first computation.
+     */
+    private String classSignature = "";
+
     public IntermediateRefType(JavaClassName className) {
         this(className, new ArrayList<>());
     }
@@ -26,14 +36,24 @@ public final class IntermediateRefType extends IntermediateType{
 
     @Override
     public String getClassSignature() {
-        //ToDo
-        return null;
-    }
+        String signature = classSignature;
+        if (!signature.equals("")) return classSignature;
 
-    @Override
-    public String getClassDescriptor() {
-        //ToDo
-        return null;
+        if (getClassName().equals("void")) signature = "V";
+        else {
+            signature += String.format("L%s", getFullyQualifiedName());
+            if (getTypParameterSize() != 0){
+                signature += "<";
+                for (IntermediateType typParameter:typParameters) {
+                    signature += String.format("L%s;", typParameter.getFullyQualifiedName());
+                }
+                signature += ">";
+            }
+            signature += ";";
+        }
+        signature.replace('.','/');
+        classSignature = signature;
+        return signature;
     }
 
     @Override
@@ -51,8 +71,16 @@ public final class IntermediateRefType extends IntermediateType{
 
     @Override
     public int hashCode() {
-        //ToDo korrekte Definition auf Basis von equals
-        return 0;
+        int prime = 31;
+        int result = hashCode;
+        if (result == 0){
+            result += getFullyQualifiedName().hashCode();
+            for (IntermediateType typeParameter:typParameters) {
+                result = prime * result + typeParameter.hashCode();
+            }
+            hashCode = result;
+        }
+        return result;
     }
 
     public int getTypParameterSize(){ return typParameters.size(); }
diff --git a/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateType.java b/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateType.java
index 3c66558f..ba0fd5e3 100644
--- a/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateType.java
+++ b/src/main/java/de/dhbwstuttgart/intermediate/types/IntermediateType.java
@@ -23,7 +23,6 @@ public abstract class IntermediateType {
     public abstract int hashCode();
 
     public abstract String getClassSignature();
-    public abstract String getClassDescriptor();
 
     @Override
     public String toString() { return getFullyQualifiedName(); }
diff --git a/src/test/java/intermediate/types/IntermediateRefTypeTest.java b/src/test/java/intermediate/types/IntermediateRefTypeTest.java
new file mode 100644
index 00000000..3c795312
--- /dev/null
+++ b/src/test/java/intermediate/types/IntermediateRefTypeTest.java
@@ -0,0 +1,54 @@
+package intermediate.types;
+
+import de.dhbwstuttgart.intermediate.types.IntermediateRefType;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.objectweb.asm.Type;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class IntermediateRefTypeTest {
+
+    private static String integerSignature;
+    private static IntermediateRefType typeToTest_Integer;
+
+    private static String listOfIntegerSignature;
+    private static IntermediateRefType typeToTest_ListofInteger;
+
+    private static String voidSignature;
+    private static IntermediateRefType typeToTest_void;
+
+    @BeforeClass
+    public static void StartUp(){
+        integerSignature = "Ljava/lang/Integer;";
+        typeToTest_Integer = new IntermediateRefType(new JavaClassName(Type.getInternalName(Integer.class)));
+
+        listOfIntegerSignature = "Ljava/util/List<Ljava/lang/Integer;>;";
+        typeToTest_ListofInteger = new IntermediateRefType(
+                new JavaClassName(Type.getInternalName(List.class)),
+                Arrays.asList(typeToTest_Integer));
+
+        voidSignature = "V";
+        typeToTest_void = new IntermediateRefType(new JavaClassName("void"));
+    }
+
+    @Test
+    public void SignatureTest_Integer(){
+        assertEquals(integerSignature, typeToTest_Integer.getClassSignature());
+    }
+
+    @Test
+    public void SignatureTest_List(){
+        assertEquals(listOfIntegerSignature, typeToTest_ListofInteger.getClassSignature());
+    }
+
+    @Test
+    public void SignatureTest_Void(){
+        assertEquals(voidSignature, typeToTest_void.getClassSignature());
+    }
+}