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Solving non-linear systems by computer : a new method
Giessen, A. A. van der, (1970)
Variable addition and Lagrange multiplier tests for linear and logarithmic regression models : theory and Monte Carlo evidence
Godfrey, L. G., (1986)
Applicability of nonlinear optimization in decision support systems : the development of a flexible optimizer
Kribbe, Wilhelmina J., (1987)
Duality in fractional programming
Swarup, K., (1968)
Note on linear programming
Swarup, K., (1966)
Note on linear fractional functionals programming