van Exel, N., de Graaf, G. . and Rietveld, P. (2004) “Getting from A to B: Operant Approaches to Travel Decision Making”, Operant Subjectivity, 27(4). Available at: https://ojs.library.okstate.edu/osu/index.php/osub/article/view/8881 (Accessed: 3July2024).