Susilo, Yusak O., Roberto Abenoza, Andree Woodcock, Fotis Liotopoulos, Andre Duarte, Jane Osmond, Apostolos Georgiadis, et al. “Findings from Measuring Door-to-Door travellers’ Travel Satisfaction With Traditional and Smartphone App Survey Methods in Eight European Cities”. European Journal of Transport and Infrastructure Research 17, no. 3 (June 1, 2017). Accessed April 24, 2024. https://journals.open.tudelft.nl/ejtir/article/view/3203.