He, Yinying, and Csaba Csiszár. “Correlation Analysis Method of Customisation and Semi-Personalisation in Mobility As a Service”. Promet - Traffic&Transportation 34, no. 5 (September 30, 2022): 767-777. Accessed April 23, 2024. https://traffic.fpz.hr/index.php/PROMTT/article/view/4126.