diff --git a/doc/groups.dox b/doc/groups.dox
--- a/doc/groups.dox
+++ b/doc/groups.dox
@@ -406,15 +406,13 @@
 LEMON contains several algorithms for this problem.
  - \ref NetworkSimplex Primal Network Simplex algorithm with various
    pivot strategies \ref dantzig63linearprog, \ref kellyoneill91netsimplex.
- - \ref CostScaling Push-Relabel and Augment-Relabel algorithms based on
-   cost scaling \ref goldberg90approximation, \ref goldberg97efficient,
+ - \ref CostScaling Cost Scaling algorithm based on push/augment and
+   relabel operations \ref goldberg90approximation, \ref goldberg97efficient,
    \ref bunnagel98efficient.
- - \ref CapacityScaling Successive Shortest %Path algorithm with optional
-   capacity scaling \ref edmondskarp72theoretical.
- - \ref CancelAndTighten The Cancel and Tighten algorithm
-   \ref goldberg89cyclecanceling.
- - \ref CycleCanceling Cycle-Canceling algorithms
-   \ref klein67primal, \ref goldberg89cyclecanceling.
+ - \ref CapacityScaling Capacity Scaling algorithm based on the successive
+   shortest path method \ref edmondskarp72theoretical.
+ - \ref CycleCanceling Cycle-Canceling algorithms, two of which are
+   strongly polynomial \ref klein67primal, \ref goldberg89cyclecanceling.
 
 In general NetworkSimplex is the most efficient implementation,
 but in special cases other algorithms could be faster.
diff --git a/lemon/capacity_scaling.h b/lemon/capacity_scaling.h
--- a/lemon/capacity_scaling.h
+++ b/lemon/capacity_scaling.h
@@ -66,7 +66,8 @@
   ///
   /// \ref CapacityScaling implements the capacity scaling version
   /// of the successive shortest path algorithm for finding a
-  /// \ref min_cost_flow "minimum cost flow". It is an efficient dual
+  /// \ref min_cost_flow "minimum cost flow" \ref amo93networkflows,
+  /// \ref edmondskarp72theoretical. It is an efficient dual
   /// solution method.
   ///
   /// Most of the parameters of the problem (except for the digraph)
diff --git a/lemon/cost_scaling.h b/lemon/cost_scaling.h
--- a/lemon/cost_scaling.h
+++ b/lemon/cost_scaling.h
@@ -90,8 +90,10 @@
   /// finding a \ref min_cost_flow "minimum cost flow".
   ///
   /// \ref CostScaling implements a cost scaling algorithm that performs
-  /// push/augment and relabel operations for finding a minimum cost
-  /// flow. It is an efficient primal-dual solution method, which
+  /// push/augment and relabel operations for finding a \ref min_cost_flow
+  /// "minimum cost flow" \ref amo93networkflows, \ref goldberg90approximation,
+  /// \ref goldberg97efficient, \ref bunnagel98efficient. 
+  /// It is a highly efficient primal-dual solution method, which
   /// can be viewed as the generalization of the \ref Preflow
   /// "preflow push-relabel" algorithm for the maximum flow problem.
   ///