@InProceedings{SpadBierLieb03,
author = {Michela Spada and Michel Bierlaire and Thomas M. Liebling },
title = {School bus routing and scheduling problem},
booktitle = {Operations Research Proceedings 2002},
pages = {180-186},
editor = {Leopold-Wildburger, U., Rendl, F. and W\"ascher, G.},
publisher = { Springer},
note = {ISBN:3540003878},
year = {2003}
}