Chintakayala PK, Young CW. Using big data to understand consumer behaviour on ethical issues. JCE. 2017 Apr 10.
Wardman M, Chintakayala PK, de Jong G. Values of travel time in Europe: review and meta-analysis. Transp Res Part A Policy Pract. 2016 Dec;94:93-111. doi: 10.1016/j.tra.2016.08.019