@InProceedings{Niikura2004approximation,
	author=	{Y Niikura and Johannes Schneider and Osamu Watanabe},
	title=	{{An approximation analysis of simple Markov processes}},
	booktitle=	{{SIGAL Workshop, IPSJ AL94-11, Tokyo, Japan}},
	month=	{March},
	year=	{2004},
}