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Journal of Transport Geography > 2015 > 46 > Complete > 189-200
Research in Transportation Economics > 2010 > 29 > 1 > 145-151
Electric Power Systems Research > 2003 > 67 > 1 > 59 - 66
International Journal of Electrical Power and Energy Systems > 2002 > 24 > 2 > 159-166
IEEE Power Engineering Society Summer Meeting, > 3 > 1278 - 1283 vol.3