by Bazaraa, Mokhtar S | Jarvis, John J | Sherali, Hanif D.
by Ravindran, A | Phillips, Don T | Solberg, James J.
by Bronson, Richard | Naadimuthu, Govindasami.
by Bazaraa, Mokhtar S.
by Kasana, H. S | Kumar, K. D.
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