@InProceedings{Niikura2004An,
	 author =	{Y Niikura and  Johannes Schneider and  Osamu Watanabe},
	 title =	{{An approximation analysis of simple Markov processes}},
	 booktitle =	{{Proc. SIGAL Workshop, IPSJ AL94-11, Tokyo, Japan}},
	 month =	{March},
	 year =		{2004}
}