gk_ma_gtsp
a generalized tsp problem with clusters port from "GTSP Instances Library (Daniel Karapetyan, http://www.cs.nott.ac.uk/~dxk/gtsp.html)" only for not symmetric matrix
a generalized tsp problem with clusters port from http://www.cs.nott.ac.uk/~dxk/gtsp.html
Python
a generalized tsp problem with clusters port from "GTSP Instances Library (Daniel Karapetyan, http://www.cs.nott.ac.uk/~dxk/gtsp.html)" only for not symmetric matrix