@booklet {306,
	title = {Acyclic Discrete Phase Type Distributions: Properties and a Parameter Extimation Algorithm},
	journal = {PERFORMANCE EVALUATION},
	volume = {54},
	year = {2003},
	pages = {1{\textendash}32},
	author = {A. BOBBIO and A. HORVATH and Marco Scarpa and M. TELEK}
}
