Thorup, Mikkel (1998), „Map graphs in polynomial time”, Proceedings of the 39th Annual Symposium on Foundations of Computer Science (FOCS 1998), pp. 396–405, DOI 10.1109/SFCS.1998.743490.
Fomin, Fedor V.; Lokshtanov, Daniel & Saurabh, Saket (2012), „Bidimensionality and geometric graphs”, Proceedings of the Twenty-Third Annual ACM-SIAM Symposium on Discrete Algorithms (SODA 2012), pp. 1563–1575, DOI 10.1137/1.9781611973099.124.