Arabzad, S. M.; Shirouyehzad, H.; Bashiri, M.; Tavakkoli-Moghaddam, R.; Najafi, E. Rebalancing Static Bike-Sharing Systems: A Two-Period Two-Commodity Multi-Depot Mathematical Model. Transport 2018, 33 (3), 718-726. https://doi.org/10.3846/transport.2018.1558.