@conference {3508,
	title = {Using Hybrid Automata to Model Four Stroke Engines with Variable Valve Timing in Simulink/Stateflow},
	booktitle = {ACMSE 2006},
	year = {2006},
	note = {CD-Rom p51.pdf},
	month = {March},
	address = {Melbourne, FL},
	author = {Williams, Brian W.}
}
