Transport Policy
Transport Policy > 1997 > 4 > 4 > 217-223
Transport Policy > 1998 > 5 > 1 > 23-35
Transport Policy > 2004 > 11 > 3 > 299-302
Transport Policy > 2012 > 24 > Complete > 260-272
Transport Policy > 2012 > 24 > Complete > 141-147
Transport Policy > 2012 > 24 > Complete > 223-231
Transport Policy > 2013 > 30 > Complete > 132-142
Transport Policy > 2017 > 55 > C > 1-8