Rattanamanee, N., T. Rattanapongpinyo, and S. Thamapipol. “The Components of Smart Mobility Transportation Business on Private Sector in Bangkok and Metropolitan Areas: Grounded Theory Research”. Executive Journal, vol. 40, no. 1, June 2020, pp. 66-79, https://so01.tci-thaijo.org/index.php/executivejournal/article/view/240259.