diff --git a/src/TNL/Solvers/Linear/SOR.h b/src/TNL/Solvers/Linear/SOR.h
index a64a4a509eb82070975abc6b93d452d3d9a285ab..76ff1db97d596e661969ee8d853da739ce9ac2db 100644
--- a/src/TNL/Solvers/Linear/SOR.h
+++ b/src/TNL/Solvers/Linear/SOR.h
@@ -21,6 +21,8 @@ namespace TNL {
  *
  * See (Wikipedia)[https://en.wikipedia.org/wiki/Successive_over-relaxation] for more details.
  *
+ * See \ref TNL::Solvers::Linear::IterativeSolver for example of showing how to use the linear solvers.
+ *
  * \tparam Matrix is type of matrix describing the linear system.
  */
 template< typename Matrix >
diff --git a/src/TNL/Solvers/Linear/TFQMR.h b/src/TNL/Solvers/Linear/TFQMR.h
index e9ec68de5b77f6d5dd5f49d9912d258d0cd870f4..97a2438829318cad0fac0c91fb4af3424fb35de9 100644
--- a/src/TNL/Solvers/Linear/TFQMR.h
+++ b/src/TNL/Solvers/Linear/TFQMR.h
@@ -21,6 +21,8 @@ namespace TNL {
  *
  * See (Wikipedia)[https://second.wiki/wiki/algoritmo_tfqmr] for more details.
  *
+ * See \ref TNL::Solvers::Linear::IterativeSolver for example of showing how to use the linear solvers.
+ *
  * \tparam Matrix is type of matrix describing the linear system.
  */
 template< typename Matrix >