海量图书期刊资源,随时随地畅享阅读乐趣
Economies of Scale and Scope in Multi-UtilitiesMehdi Farsi, Aurelio Fetz and Massimo Filippini · The Energy Journal · 2008
Economies of Scale and Scope in Local Public TransportationMehdi Farsi, Aurelio Fetz and Massimo Filippini · Journal of Transport Economics and Policy · 2007