diff --git a/eo/src/eoFunctor.h b/eo/src/eoFunctor.h
index 50c13664..e782328a 100644
--- a/eo/src/eoFunctor.h
+++ b/eo/src/eoFunctor.h
@@ -29,7 +29,7 @@
 
 #include <functional>
 
-/** @ddtogroup Core
+/** @addtogroup Core
  * @{
  */
 
diff --git a/eo/src/eoInvalidateOps.h b/eo/src/eoInvalidateOps.h
index aa5a1853..ecc470ab 100644
--- a/eo/src/eoInvalidateOps.h
+++ b/eo/src/eoInvalidateOps.h
@@ -31,7 +31,6 @@
 
 /** @addtogroup Utilities
 
-/**
 One of the invalidator operators. Use this one as a 'hat' on an operator
 that is defined to work on a generic datatype. This functor will then check
 the return type of the operator and invalidate the fitness of the individual.
diff --git a/eo/src/eoMergeReduce.h b/eo/src/eoMergeReduce.h
index b4c71752..8524f1d8 100644
--- a/eo/src/eoMergeReduce.h
+++ b/eo/src/eoMergeReduce.h
@@ -37,9 +37,9 @@
 /** 
 Replacement strategies that combine en eoMerge and an eoReduce.
 
-@classes: eoMergeReduce, the base (pure abstract) class
-          eoPlusReplacement the ES plus strategy
-	  eoCommaReplacement the ES comma strategy
+@class eoMergeReduce, the base (pure abstract) class
+@class eoPlusReplacement the ES plus strategy
+@class eoCommaReplacement the ES comma strategy
 */
 
 /**
diff --git a/eo/src/eoReplacement.h b/eo/src/eoReplacement.h
index 972aa61a..2c2d8984 100644
--- a/eo/src/eoReplacement.h
+++ b/eo/src/eoReplacement.h
@@ -57,9 +57,9 @@ MS 12/12/2000
 
   @see eoMerge, eoReduce, eoMergeReduce, eoReduceMerge 
 
-@classes eoReplacement,                    base (pure abstract) class
-         eoGenerationalReplacement,        as it says ...
-	 eoWeakElitistReplacement          a wrapper to add elitism
+@class eoReplacement,                    base (pure abstract) class
+@class eoGenerationalReplacement,        as it says ...
+@class eoWeakElitistReplacement          a wrapper to add elitism
 
 */
 
diff --git a/eo/src/eoSurviveAndDie.h b/eo/src/eoSurviveAndDie.h
index 81e2e310..3650a536 100644
--- a/eo/src/eoSurviveAndDie.h
+++ b/eo/src/eoSurviveAndDie.h
@@ -42,8 +42,9 @@ kills the ones that are to die,
 puts the ones that are to survive into the second argument
 removes them from the first pop argument
 
-@classes: eoSurviveAndDie, eoDeterministicSurviveAndDie,
-          eoDeterministicSaDReplacement
+@class eoSurviveAndDie
+@class eoDeterministicSurviveAndDie,
+@class eoDeterministicSaDReplacement
 */
 
 /** @addtogroup Replacors
diff --git a/eo/src/utils/eoStat.h b/eo/src/utils/eoStat.h
index b7b91278..8529f1ce 100644
--- a/eo/src/utils/eoStat.h
+++ b/eo/src/utils/eoStat.h
@@ -454,7 +454,8 @@ public:
   
     virtual std::string className(void) const { return "eoInterquartileRangeStat"; }
 };
-
+/** @example t-eoIQRStat.cpp
+ */
 
 /** Compute the average size of indivudals over the population
  *
diff --git a/eo/src/utils/eoUniformInit.h b/eo/src/utils/eoUniformInit.h
index 005b7f7e..fa1b874d 100644
--- a/eo/src/utils/eoUniformInit.h
+++ b/eo/src/utils/eoUniformInit.h
@@ -29,11 +29,10 @@
  * eoRndGenerators, we might as well have these directly written without
  * overhead
 
-@classes:  
-  eoUniformInit     uniform initialization for doubles, floats, ints, ...
-  eoBooleanInit     biased init for booleans
-  eoNormalInit      normal intialization for doubles and floats
-  eoNegExpInit      negative exponential distributions    "
+@class eoUniformInit     uniform initialization for doubles, floats, ints, ...
+@class eoBooleanInit     biased init for booleans
+@class eoNormalInit      normal intialization for doubles and floats
+@class eoNegExpInit      negative exponential distributions    "
 */
 
 #ifndef eoUniformInit_h
diff --git a/eo/test/CMakeLists.txt b/eo/test/CMakeLists.txt
index 2c0772de..4f194681 100644
--- a/eo/test/CMakeLists.txt
+++ b/eo/test/CMakeLists.txt
@@ -25,8 +25,6 @@ LINK_DIRECTORIES(${EO_BINARY_DIR}/lib)
 ######################################################################################
 
 SET (TEST_LIST
-  t-eoParetoFitness
-  t-eoPareto
   t-eofitness
   t-eoRandom
   t-eobin
@@ -65,8 +63,8 @@ SET (TEST_LIST
   t-eoSyncEasyPSO
   t-eoOrderXover
   t-eoExtendedVelocity
-  # t-eoFrontSorter
   t-eoLogger
+  t-eoIQRStat
   )
 
 
diff --git a/eo/test/t-eoIQRStat.cpp b/eo/test/t-eoIQRStat.cpp
new file mode 100644
index 00000000..60bcff8f
--- /dev/null
+++ b/eo/test/t-eoIQRStat.cpp
@@ -0,0 +1,69 @@
+
+#include <eo>
+#include <es.h>
+#include <utils/eoStat.h>
+
+#include "real_value.h"
+
+typedef eoReal<eoMinimizingFitness> realVec;
+
+double test( eoPop<realVec>& pop, double target_value )
+{
+    eoEvalFuncPtr<realVec, double, const std::vector<double>&> eval( real_value );
+
+    eoPopLoopEval<realVec> pop_eval(eval);
+
+    pop_eval(pop,pop);
+
+    eoInterquartileRangeStat<realVec> iqr_stat(0.0, "IQR");
+
+    iqr_stat( pop );
+
+    std::cout << iqr_stat.longName() << "=" << iqr_stat.value() << " should be " << target_value << std::endl;
+
+    return iqr_stat.value();
+}
+
+int main()
+{
+    eoPop<realVec> pop;
+
+    // fixed test
+    realVec sol1(2,-1);
+    realVec sol2(2,-1);
+    realVec sol3(2,1);
+    realVec sol4(2,1);
+    pop.push_back( sol1 );
+    pop.push_back( sol2 );
+    pop.push_back( sol3 );
+    pop.push_back( sol4 );
+    // on the sphere function everyone has the same fitness of 1
+    if( test(pop, 0) != 0 ) {
+        exit(1);
+    }
+
+    pop.erase(pop.begin(),pop.end());
+
+    // fixed test
+    sol1 = realVec(2,0);
+    sol2 = realVec(2,0);
+    sol3 = realVec(2,1);
+    sol4 = realVec(2,1);
+    pop.push_back( sol1 );
+    pop.push_back( sol2 );
+    pop.push_back( sol3 );
+    pop.push_back( sol4 );
+    if( test(pop, 1) != 1 ) {
+        exit(1);
+    }
+
+    // test on a random normal distribution
+    eoNormalGenerator<double> normal(1,rng);
+    eoInitFixedLength<realVec> init_N(2, normal);
+    pop = eoPop<realVec>( 1000000, init_N );
+    double iqr = test(pop, 1.09);
+    if( iqr < 1.08 || iqr > 1.11 ) {
+        exit(1);
+    }
+}
+