Transportation Research Part B: Methodological
Transportation Research Part B > 2005 > 39 > 9 > 855-863
Transportation Research Part B > 2005 > 39 > 9 > 769-795
Transportation Research Part B > 2005 > 39 > 9 > 825-853
Transportation Research Part B > 2005 > 39 > 9 > 797-823