S. M. Tariq Shah, S. Phandanouvong, A. Maqsoom, M. Rith, and M. Piantanakulchai, “Exploring determinants of travel-mode choice during the covid-19 pandemic outbreak: A case study of Islamabad, Pakistan”, Eng Appl Sci Res, vol. 48, no. 4, pp. 406–413, Jun. 2021.