Search results for: Georg Umgiesser
Ecological Economics > 2010 > 69 > 10 > 1964-1972
Transportation Research Part D > 2010 > 15 > 6 > 343-349
Ecological Economics > 2010 > 69 > 10 > 1964-1972
Transportation Research Part D > 2010 > 15 > 6 > 343-349