%0 Journal Article %A S. N. Slugin %A A. I. Gavrikov %T A~method of two-sided approximations for a~search for the optimum with constraints of equality type %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1976 %P 100-103 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1976_8_a14/ %G ru %F IVM_1976_8_a14