L. N. Das

Symmetric dual multiobjective programming

Sudarsan Nanda, L. N. Das, S. Nanda, 1997 .

Proper efficiency conditions and duality for multiobjective programming problems involving semilocally invex functions

Sudarsan Nanda, L. N. Das, 1995 .

Pseudo-invexity and symmetric duality in nonlinar programming

L. N. Das, S. Nanda, S. Nanda, 1994 .

Pseudo-invexity and duality in nonlinear programming

Sudarsan Nanda, L. N. Das, 1996 .

Pseudo-invexity and symmetric duality in nonlinear fractional programming

Sudarsan Nanda, L. N. Das, S. Nanda, 1994 .