@inproceedings{DLT-2002-SasakiIIW,
	author        = "Yuji Sasaki and Katsushi Inoue and Akira Ito and Yue Wang",
	booktitle     = "{Revised Papers of the Seventh International Conference on Developments in Language Theory}",
	doi           = "10.1007/3-540-45005-X_16",
	isbn          = "3-540-40431-7",
	pages         = "185--196",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Space Lower Bound of Two-Dimensional Probabilistic Turing Machines}",
	volume        = 2450,
	year          = 2002,
}