Transportation Research Part B: Methodological
Transportation Research Part B > 2011 > 45 > 2 > 385-391
Transportation Research Part B > 2011 > 45 > 3 > 605-617
Transportation Research Part B > 2011 > 45 > 4 > 643-655
Transportation Research Part B > 2011 > 45 > 5 > 782-788