Research in Transportation Economics
Research in Transportation Economics > 2010 > 29 > 1 > 212-218
Research in Transportation Economics > 2013 > 39 > 1 > 21-33
Research in Transportation Economics > 2013 > 39 > 1 > 202-207
Research in Transportation Economics > 2014 > 48 > Complete > 24-32
Research in Transportation Economics > 2015 > 51 > Complete > 49-60