Rattanamanee, Nisachon, Taninrat Rattanapongpinyo, and Sawanya Thamapipol. 2020. “The Components of Smart Mobility Transportation Business on Private Sector in Bangkok and Metropolitan Areas: Grounded Theory Research”. Executive Journal 40 (1):66-79. https://so01.tci-thaijo.org/index.php/executivejournal/article/view/240259.