Am. J. Oper. Res. Vol.2 No.2, June 20, 2012 DOI:10.4236/ajor.2012.22032
Am. J. Oper. Res. Vol.2 No.2, June 20, 2012 DOI:10.4236/ajor.2012.22031
Am. J. Oper. Res. Vol.2 No.2, June 20, 2012 DOI:10.4236/ajor.2012.22030
Am. J. Oper. Res. Vol.2 No.2, June 20, 2012 DOI:10.4236/ajor.2012.22029
Am. J. Oper. Res. Vol.2 No.2, June 20, 2012 DOI:10.4236/ajor.2012.22028
Am. J. Oper. Res. [ISSUE], [PUBDATE] DOI:[DOI]