Gronau, Reuben (1970). "The Effect of Traveling Time on the Demand for Passenger Transportation". Journal of Political Economy. 78 (2): 377–394. doi:10.1086/259635. JSTOR1830696. S2CID154637374.
Gronau, Reuben (1970). "The Effect of Traveling Time on the Demand for Passenger Transportation". Journal of Political Economy. 78 (2): 377–394. doi:10.1086/259635. JSTOR1830696. S2CID154637374.
Gronau, Reuben (1970). "The Effect of Traveling Time on the Demand for Passenger Transportation". Journal of Political Economy. 78 (2): 377–394. doi:10.1086/259635. JSTOR1830696. S2CID154637374.