@conference {potvin89application,
	title = {Application of Object-Oriented Programming for Modeling and Solving Vehicle Routing Problems},
	booktitle = {TOOLS{\textquoteright}89},
	year = {1989},
	month = {nov},
	pages = {325-355},
	address = {Paris},
	author = {Potvin, J.-Y. and Guy Lapalme and Rousseau, J.-M.}
}
