@article{10_37236_2712,
     author = {Laurent Beaudou and C\'esar Hern\'andez-V\'elez and Gelasio Salazar},
     title = {Making a graph crossing-critical by multiplying its edges},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {1},
     doi = {10.37236/2712},
     zbl = {1266.05101},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2712/}
}