@inproceedings{STOC-1974-HopcroftW,
	author        = "John E. Hopcroft and J. K. Wong",
	booktitle     = "{Proceedings of the Sixth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800119.803896",
	pages         = "172--184",
	publisher     = "{ACM}",
	title         = "{Linear Time Algorithm for Isomorphism of Planar Graphs}",
	year          = 1974,
}