Research in Transportation Business & Management
Research in Transportation Business & Management > 2011 > 1 > 1 > 55-61
Research in Transportation Business & Management > 2016 > 21 > C > 94-98
Research in Transportation Business & Management > 2016 > 21 > C > 84-93
Research in Transportation Business & Management > 2016 > 21 > C > 68-75