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Procedia Economics and Finance > 2016 > 36 > C > 291-300
Procedia Economics and Finance > 2015 > 32 > Complete > 338-344
Zeszyty Naukowe ZPSB Firma i Rynek > 2014 > 2(47) > 69-80
European Journal of Operational Research > 2010 > 201 > 2 > 505-519
Regional Science and Urban Economics > 1998 > 28 > 5 > 629-654