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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)
Upper bound problem in linear fractional functionals programming
Swarup, K., (1970)