@article{JGAA_2018_22_1_a6,
     author = {Luca Grilli},
     title = {On the {NP-hardness} of {GRacSim} drawing and {k-SEFE} {Problems}},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {101--116},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {2018},
     doi = {10.7155/jgaa.00456},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00456/}
}