Dattilo J, Siperstein GN, McDowell ED, Schleien SJ, Whitaker E, Block M, Spolidoro M, Bari J, Hall A. Perceptions of programming needs for inclusive leisure services. JPRA. 2019 Oct 24;37(4):70-91. doi: 10.18666/JPRA-2019-9514
Phanikumar CV, Maitra B. Modeling willingness-to-pay values for rural bus attributes under different trip purposes. JTRF. 2006;45(2):31-44. doi: 10.22004/ag.econ.206787