@article{57735,
      author = {Gottfried, Byron S., and Weisman, Joel,},
      url = {http://library.usi.edu/record/57735},
      title = {Introduction to optimization theory},
      publisher = {Prentice-Hall},
      recid = {57735},
      pages = {xviii, 571 p.},
      address = {Englewood Cliffs, N.J.,},
      year = {1973},
}