@article{IVM_1983_2_a5,
     author = {Ya. I. Zabotin and M. I. Kreinin},
     title = {Construction of nonrelaxation subgradients of methods of unconditional minimization of convex functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {41--48},
     publisher = {mathdoc},
     number = {2},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_2_a5/}
}