-/* transforms the network structure of a directed acyclic graph given as argument into a linear structure
-@return an array containing the nodes of the graph sorted in order reverse to the path of exploration
-if a cycle is detected an exception is raised
+/** @brief transforms the network structure of a directed acyclic graph given into a linear structure
+ @return: an array containing the nodes of the graph sorted in order reverse to the path of exploration
+ if a cycle is detected an exception is raised