Paul Roderick, Hugh Rayner, Sarah Tonkin-Crine, Ikumi Okamoto, Caroline Eyles, Geraldine M. Leydon, Miriam Santer, Jonathan H. Klein, Guiqing Lily Yao, Fliss Murtagh, Ken Farrington, Fergus Caskey, Charles Tomson, Fiona Loud, Emma Murphy, Robert Elias, Roger Greenwood & Donal O'Donoghue,
2015, Health Services and Delivery Research, 3(12)
Jose M. Belenguer, Enrique Benavent, Antonio Martinez Sykora, Christian Prins, Caroline Prodhon & Juan G. Villegas,
2015, Transportation Science, 50(2), 735 - 749