@article{10_37236_1695,
     author = {F. Aguil\'o and E. Sim\'o and M. Zaragoz\'a},
     title = {Optimal double-loop networks with non-unit steps},
     journal = {The electronic journal of combinatorics},
     year = {2003},
     volume = {10},
     doi = {10.37236/1695},
     zbl = {1017.05043},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1695/}
}