1. Berman, O., Drezner, Z. and Wesolowsky, G. O., The facility and transfer points location problems, International Transactions in Operational Research, Vol. 12, (2005), pp. 387–402.
2. Bögl, M., Doerner, K. F. and Parragh, S. N., The school bus routing and scheduling problem with transfers, Networks, Vol. 65, (2015), pp. 180–203.
3. Chalkia, E., Salanova Grau, J. M., Bekiaris, E., Ayfandopoulou, G., Ferarini, C. and Mitsakis, E., Safety bus routing for the transportation of pupils to school, In Yannis, G. and Cohen, S. (eds.): Traffic Safety, 2016, ISTE and John Wiley & Sons.
4. Geospatial Information Authority of Japan, Digital Map 2500 (Spatial Data Framework), CD-ROM, (2006).
5. Malucelli, F., Nonato, M. and Tresoldi, E., Optimization based planning of Pedibus lines: an arc based approach, Transportation Research Procedia, Vol. 27, (2017), pp. 760–767.