Cost Efficiency and Subsidization in German Local Public Bus Transit
2008 ◽
Vol 42
(8)
◽
pp. 1086-1097
◽
2010 ◽
Vol 44
(7)
◽
pp. 457-472
◽
Keyword(s):
2019 ◽
Vol 9
(10)
◽
pp. p9411