@inproceedings{CSL-1996-Yashin,
	author        = "A. D. Yashin",
	booktitle     = "{Selected Papers of the 10th International Workshop on Computer Science Logic / Annual Conference of the EACSL}",
	doi           = "10.1007/3-540-63172-0_56",
	isbn          = "3-540-63172-0",
	pages         = "460--471",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{New Intuitionistic Logical Constants: Undecidability of the Conservativsness Problem}",
	volume        = 1258,
	year          = 1996,
}