@TechReport{SpadBierLieb04,
author = {Michela Spada and Michel Bierlaire and Thomas M. Liebling },
title = {Decision-aid Methodology for the School Bus Routing and Scheduling Problem},
institution = {Operations Research Group ROSO, Ecole Polytechnique F\'ed\'erale de Lausanne},
number = {RO 2004 05 03, Revised version},
note = {Published as Spada, M., Bierlaire, M., and Liebling, Th. M. (2005). Decision-aid methodology for the school bus routing and scheduling problem, Transportation Science39(4):477-490},
year = {2004}
}