diff --git a/src/java/org/apache/commons/math/ode/ODEIntegrator.java b/src/java/org/apache/commons/math/ode/ODEIntegrator.java
index 6346bb494..a1fe60d5a 100644
--- a/src/java/org/apache/commons/math/ode/ODEIntegrator.java
+++ b/src/java/org/apache/commons/math/ode/ODEIntegrator.java
@@ -23,6 +23,14 @@ import java.util.Collection;
 import org.apache.commons.math.ode.events.EventHandler;
 import org.apache.commons.math.ode.sampling.StepHandler;
 
+/**
+ * This interface defines the common parts shared by integrators
+ * for first and second order differential equations.
+ * @see FirstOrderIntegrator
+ * @see SecondOrderIntegrator
+ * @version $Revision$ $Date$
+ * @since 2.0
+ */
 public interface ODEIntegrator extends Serializable {
 
     /** Get the name of the method.
@@ -106,4 +114,4 @@ public interface ODEIntegrator extends Serializable {
      */
     double getCurrentSignedStepsize();
 
-}
\ No newline at end of file
+}
diff --git a/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthIntegrator.java b/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthIntegrator.java
index 2e44d5bc9..65ba7c33a 100644
--- a/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthIntegrator.java
+++ b/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthIntegrator.java
@@ -225,15 +225,17 @@ public class AdamsBashforthIntegrator extends MultistepIntegrator {
     }
 
     /** Compute the backward differences coefficients array.
-     * <p>This is quite similar to the Pascal triangle, except for a
-     * (-1)<sup>i</sup> sign. We use a straightforward approach here,
-     * since we don't expect this to be run too many times with too
-     * high k. It is based on the recurrence relations:</p>
+     * <p>This is quite similar to the Pascal triangle containing the
+     * binomial coefficiens, except for an additional (-1)<sup>i</sup> sign.
+     * We use a straightforward approach here, since we don't expect this to
+     * be run too many times with too high k. It is based on the recurrence
+     * relations:</p>
      * <pre>
      *   &nabla;<sup>0</sup> f<sub>n</sub> = f<sub>n</sub>
      *   &nabla;<sup>i+1</sup> f<sub>n</sub> = &nabla;<sup>i</sup>f<sub>n</sub> - &nabla;<sup>i</sup>f<sub>n-1</sub>
      * </pre>
      * @param order order of the integration method
+     * @return the coefficients array for backward differences
      */
     static int[][] computeBackwardDifferencesArray(final int order) {
 
diff --git a/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthStepInterpolator.java b/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthStepInterpolator.java
index 0d46419dc..01f35ff4b 100644
--- a/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthStepInterpolator.java
+++ b/src/java/org/apache/commons/math/ode/nonstiff/AdamsBashforthStepInterpolator.java
@@ -120,6 +120,7 @@ class AdamsBashforthStepInterpolator extends MultistepStepInterpolator {
     /** Truncate a step.
      * <p>Truncating a step is necessary when an event is triggered
      * before the nominal end of the step.</p>
+     * @param truncatedEndTime end time of truncated step
      */
     void truncateStep(final double truncatedEndTime) {
         currentTime = truncatedEndTime;
diff --git a/src/java/org/apache/commons/math/ode/nonstiff/AdamsMoultonStepInterpolator.java b/src/java/org/apache/commons/math/ode/nonstiff/AdamsMoultonStepInterpolator.java
index 35ed7d98a..4e41252f0 100644
--- a/src/java/org/apache/commons/math/ode/nonstiff/AdamsMoultonStepInterpolator.java
+++ b/src/java/org/apache/commons/math/ode/nonstiff/AdamsMoultonStepInterpolator.java
@@ -120,6 +120,7 @@ class AdamsMoultonStepInterpolator extends MultistepStepInterpolator {
     /** Truncate a step.
      * <p>Truncating a step is necessary when an event is triggered
      * before the nominal end of the step.</p>
+     * @param truncatedEndTime end time of truncated step
      */
     void truncateStep(final double truncatedEndTime) {
         currentTime = truncatedEndTime;
diff --git a/src/java/org/apache/commons/math/ode/nonstiff/MultistepIntegrator.java b/src/java/org/apache/commons/math/ode/nonstiff/MultistepIntegrator.java
index 4991e8a9d..b528e2170 100644
--- a/src/java/org/apache/commons/math/ode/nonstiff/MultistepIntegrator.java
+++ b/src/java/org/apache/commons/math/ode/nonstiff/MultistepIntegrator.java
@@ -287,7 +287,7 @@ public abstract class MultistepIntegrator extends AbstractIntegrator {
         private double[] finalState;
 
         /** Build a new instance.
-         * @param number of steps to store
+         * @param n number of steps to store
          */
         public StoringStepHandler(final int n) {
             this.n = n;