@inproceedings{ICALP-1990-Geffert,
	author        = "Viliam Geffert",
	booktitle     = "{Proceedings of the 17th International Colloquium on Automata, Languages and Programming}",
	doi           = "10.1007/BFb0032026",
	isbn          = "3-540-52826-1",
	note          = "journal version: SIAM J. Comput. 20(3): 484-498(1991)",
	pages         = "111--124",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Nondeterministic Computations in Sublogarithmic Space and Space Constructibility}",
	volume        = 443,
	year          = 1990,
}