Am. J. Oper. Res. Vol.4 No.2, March 28, 2014 DOI:10.4236/ajor.2014.42009
Am. J. Oper. Res. Vol.4 No.2, March 25, 2014 DOI:10.4236/ajor.2014.42008
Am. J. Oper. Res. Vol.4 No.2, March 25, 2014 DOI:10.4236/ajor.2014.42007
Am. J. Oper. Res. Vol.4 No.2, March 25, 2014 DOI:10.4236/ajor.2014.42006
Am. J. Oper. Res. [ISSUE], [PUBDATE] DOI:[DOI]