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International Entrepreneurship and Management Journal > 2015 > 11 > 4 > 769-792
Small Business Economics > 2013 > 40 > 3 > 635-649
European Journal of Operational Research > 2011 > 215 > 3 > 705-712
IEEE Spectrum > 2007 > 44 > 5 > 49 - 54
2006 IEEE MTT-S International Microwave Symposium Digest > 1004 - 1007