@inproceedings{POPL-1983-Wegman,
	author        = "Mark N. Wegman",
	booktitle     = "{Conference Record of the 10th Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/567067.567088",
	editor        = "John R. Wright and Larry Landweber and Alan J. Demers and Tim Teitelbaum",
	isbn          = "0-89791-090-7",
	pages         = "203--216",
	publisher     = "{ACM Press}",
	title         = "{Summarizing Graphs by Regular Expressions}",
	year          = 1983,
}