@Article{SpadBierLieb05,
author = {Michela Spada and Michel Bierlaire and Thomas M. Liebling },
title = {Decision-aid methodology for the school bus routing and scheduling problem},
journal = {Transportation Science},
volume = {39},
number = {4},
pages = {477-490},
doi = {10.1287/trsc.1040.0096},
year = {2005}
}