diff --git a/src/main/java/tec/uom/impl/enums/unit/DimensionlessUnit.java b/src/main/java/tec/uom/impl/enums/unit/DimensionlessUnit.java
index a6abc11..0674af2 100644
--- a/src/main/java/tec/uom/impl/enums/unit/DimensionlessUnit.java
+++ b/src/main/java/tec/uom/impl/enums/unit/DimensionlessUnit.java
@@ -48,7 +48,7 @@
 
 /**
  * @author Werner Keil
- * @version 1.2, $Date: 2016-06-21 $
+ * @version 1.3, $Date: 2016-06-30 $
  */
 public enum DimensionlessUnit implements Unit<Dimensionless>,
 	DoubleFactorSupplier {
@@ -161,8 +161,4 @@ public Unit<Dimensionless> transform(UnitConverter operation) {
     public Unit<Dimensionless> shift(double v) {
 	return this;
     }
-
-    public Map getProductUnits() {
-	throw new UnsupportedOperationException("Use getBaseUnits() instead");
-    }
 }
diff --git a/src/main/java/tec/uom/impl/enums/unit/DistanceUnit.java b/src/main/java/tec/uom/impl/enums/unit/DistanceUnit.java
index 51af973..8915c53 100644
--- a/src/main/java/tec/uom/impl/enums/unit/DistanceUnit.java
+++ b/src/main/java/tec/uom/impl/enums/unit/DistanceUnit.java
@@ -49,8 +49,7 @@
 
 /**
  * @author Werner Keil
- * @version 1.3.1 ($Revision: 444 $), $Date: 2014-03-18 23:55:19 +0100 (Di, 18
- *          Mär 2014) $
+ * @version 1.3.2, $Date: 2016-06-30 $
  */
 public enum DistanceUnit implements Unit<Length>, DoubleFactorSupplier,
 	DescriptiveEnum<DistanceUnit> {
@@ -177,8 +176,4 @@ public String getDescription() {
     public DescriptiveEnum<DistanceUnit>[] dValues() {
 	return DistanceUnit.values();
     }
-
-    public Map getProductUnits() {
-	throw new UnsupportedOperationException("Use getBaseUnits() instead");
-    }
 }
diff --git a/src/main/java/tec/uom/impl/enums/unit/ShirtSizeUnit.java b/src/main/java/tec/uom/impl/enums/unit/ShirtSizeUnit.java
index 9ff1891..e196ab0 100644
--- a/src/main/java/tec/uom/impl/enums/unit/ShirtSizeUnit.java
+++ b/src/main/java/tec/uom/impl/enums/unit/ShirtSizeUnit.java
@@ -45,7 +45,7 @@
 
 /**
  * @author Werner Keil
- * @version 0.1, $Date: 2014-08-28 $
+ * @version 0.2, $Date: 2016-06-30 $
  */
 public enum ShirtSizeUnit implements Unit<ShirtSize>,
 	DescriptiveEnum<ShirtSizeUnit> {
@@ -165,8 +165,4 @@ public String getDescription() {
     public DescriptiveEnum<ShirtSizeUnit>[] dValues() {
 	return ShirtSizeUnit.values();
     }
-
-    public Map getProductUnits() {
-	throw new UnsupportedOperationException("Use getBaseUnits() instead");
-    }
 }
diff --git a/src/main/java/tec/uom/impl/enums/unit/TemperatureUnit.java b/src/main/java/tec/uom/impl/enums/unit/TemperatureUnit.java
index d257e48..1c32ea8 100644
--- a/src/main/java/tec/uom/impl/enums/unit/TemperatureUnit.java
+++ b/src/main/java/tec/uom/impl/enums/unit/TemperatureUnit.java
@@ -49,7 +49,7 @@
 
 /**
  * @author Werner Keil
- * @version 0.4.1, $Date: 2014-12-20 $
+ * @version 0.5, $Date: 2016-06-30 $
  */
 public enum TemperatureUnit implements Unit<Temperature>, DoubleFactorSupplier,
 	DescriptionSupplier {
@@ -237,8 +237,4 @@ public Unit<Temperature> shift(double v) {
     public String getDescription() {
 	return description;
     }
-
-    public Map getProductUnits() {
-	throw new UnsupportedOperationException("Use getBaseUnits() instead");
-    }
 }
\ No newline at end of file
diff --git a/src/main/java/tec/uom/impl/enums/unit/TimeUnit.java b/src/main/java/tec/uom/impl/enums/unit/TimeUnit.java
index f0f2d9b..6daca5a 100644
--- a/src/main/java/tec/uom/impl/enums/unit/TimeUnit.java
+++ b/src/main/java/tec/uom/impl/enums/unit/TimeUnit.java
@@ -45,8 +45,7 @@
 
 /**
  * @author Werner Keil
- * @version 1.2 ($Revision: 444 $), $Date: 2014-03-18 23:55:19 +0100 (Di, 18 Mär
- *          2014) $
+ * @version 1.3, $Date: 2016-06-30 $
  */
 public enum TimeUnit implements Unit<Time>, DoubleFactorSupplier {
 
@@ -165,8 +164,4 @@ public Unit<Time> transform(UnitConverter operation) {
     public Unit<Time> shift(double v) {
 	return this;
     }
-
-    public Map getProductUnits() {
-	throw new UnsupportedOperationException("Use getBaseUnits() instead");
-    }
 }
\ No newline at end of file