@article{JGAA_2018_22_1_a7,
     author = {P\'eter Hajnal and Alexander Igamberdiev and G\"unter Rote and Andr\'e Schulz},
     title = {Saturated simple and 2-simple topological graphs with few edges},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {117--138},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {2018},
     doi = {10.7155/jgaa.00460},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00460/}
}