@book {shelly_systems_1991,
	title = {Systems {Analysis} and {Design}},
	year = {1991},
	note = {n/a},
	publisher = {boyd \& fraser},
	organization = {boyd \& fraser},
	address = {Boston},
	abstract = {n/a},
	author = {Shelly, Gary B. and Cashman, Thomas J. and Adamski, Judy and Adamski, Joseph J.}
}
