%0 Journal Article %A Ya. I. Zabotin %A M. I. Kreinin %T Construction of nonrelaxation subgradients of methods of unconditional minimization of convex functions %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1983 %P 41-48 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1983_2_a5/ %G ru %F IVM_1983_2_a5