Transport Policy
Transport Policy > 1995 > 2 > 1 > 15-23
Transport Policy > 1995 > 2 > 1 > 33-42
Transport Policy > 2000 > 7 > 2 > 159-172
Transport Policy > 2007 > 14 > 2 > 165-179
Transport Policy > 2011 > 18 > 1 > 194-203
Transport Policy > 2011 > 18 > 2 > 456-467
Transport Policy > 2015 > 44 > C > 76-88