diff --git a/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolatingFunction.java b/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolatingFunction.java
index f2475b329..dbfd4d2c4 100644
--- a/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolatingFunction.java
+++ b/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolatingFunction.java
@@ -16,17 +16,16 @@
  */
 package org.apache.commons.math.analysis.interpolation;
 
-import java.util.List;
 import java.util.ArrayList;
-import java.util.Map;
 import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 import org.apache.commons.math.DimensionMismatchException;
 import org.apache.commons.math.MathRuntimeException;
-import org.apache.commons.math.FunctionEvaluationException;
 import org.apache.commons.math.analysis.MultivariateRealFunction;
-import org.apache.commons.math.linear.RealVector;
 import org.apache.commons.math.linear.ArrayRealVector;
+import org.apache.commons.math.linear.RealVector;
 import org.apache.commons.math.random.UnitSphereRandomVectorGenerator;
 
 /**
@@ -184,8 +183,7 @@ public class MicrosphereInterpolatingFunction
      * @param point Interpolation point.
      * @return the interpolated value.
      */
-    public double value(double[] point)
-        throws FunctionEvaluationException {
+    public double value(double[] point) {
 
         final RealVector p = new ArrayRealVector(point);
 
@@ -235,6 +233,7 @@ public class MicrosphereInterpolatingFunction
      *
      * @param v Vector.
      * @param w Vector.
+     * @return cosine of the angle
      */
     private double cosAngle(final RealVector v, final RealVector w) {
         return v.dotProduct(w) / (v.getNorm() * w.getNorm());
diff --git a/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolator.java b/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolator.java
index ae3a7a4b0..a5b470786 100644
--- a/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolator.java
+++ b/src/main/java/org/apache/commons/math/analysis/interpolation/MicrosphereInterpolator.java
@@ -107,16 +107,16 @@ public class MicrosphereInterpolator
 
     /**
      * Set the number of microsphere elements.
-     * @param microsphereElements Number of surface elements of the microsphere.
+     * @param elements Number of surface elements of the microsphere.
      * @throws IllegalArgumentException if {@code microsphereElements <= 0}.
      */
-    public void setMicropshereElements(final int microsphereElements) {
+    public void setMicropshereElements(final int elements) {
         if (microsphereElements < 0) {
             throw MathRuntimeException.createIllegalArgumentException(
                 "number of microsphere elements must be positive, but got {0}",
                 microsphereElements);
         }
-        this.microsphereElements = microsphereElements;
+        this.microsphereElements = elements;
     }
 
 }
diff --git a/src/main/java/org/apache/commons/math/analysis/interpolation/MultivariateRealInterpolator.java b/src/main/java/org/apache/commons/math/analysis/interpolation/MultivariateRealInterpolator.java
index 58230f5d5..c7a1c055a 100644
--- a/src/main/java/org/apache/commons/math/analysis/interpolation/MultivariateRealInterpolator.java
+++ b/src/main/java/org/apache/commons/math/analysis/interpolation/MultivariateRealInterpolator.java
@@ -21,7 +21,7 @@ import org.apache.commons.math.analysis.MultivariateRealFunction;
 
 /**
  * Interface representing a univariate real interpolating function.
- *  
+ *
  * @version $Revision$ $Date$
  */
 public interface MultivariateRealInterpolator {
@@ -40,7 +40,6 @@ public interface MultivariateRealInterpolator {
      *         interpolation algorithm or some dimension mismatch occurs
      * @throws IllegalArgumentException if there are no data (xval null or zero length)
      */
-    public MultivariateRealFunction interpolate(double[][] xval,
-                                                double[] yval)
+    MultivariateRealFunction interpolate(double[][] xval, double[] yval)
         throws MathException, IllegalArgumentException;
 }