@article{GDZPPN001166654, title = {Symmetry and Self-duality in Nonlinear Programming.}, journal = {Numerische Mathematik}, volume = {10}, year = {1967}, pages = {103-109}, zbl = {0162.23104}, url = {http://dml.mathdoc.fr/item/GDZPPN001166654} }
MEHNDIRATTA, S.L. Symmetry and Self-duality in Nonlinear Programming.. Numerische Mathematik, Tome 10 (1967) pp. 103-109. http://gdmltest.u-ga.fr/item/GDZPPN001166654/