@conference {22291,
	title = {Simulation of Uncertain Discrete-time Physical Systems‎},
	booktitle = {‎1st Conference on Mathematics and Engineering Physics},
	year = {1991},
	month = {January 9-12},
	address = {Cairo, ‎Egypt},
	author = {Magdy Aboelela and K. M. Ammar}
}
