@inproceedings{PLILP-1992-Holzbaur,
	author        = "Christian Holzbaur",
	booktitle     = "{Proceedings of the Fourth International Symposium on Programming Language Implementation and Logic Programming}",
	doi           = "10.1007/3-540-55844-6_100",
	isbn          = "3-540-55844-6",
	pages         = "260--268",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Metastructures versus Attributed Variables in the Context of Extensible Unification}",
	volume        = 631,
	year          = 1992,
}