@article{KUIPM_1984_12_12_a3,
     author = {R. F. Khabibullin},
     title = {Subgradient method for minimization of convex functionals and some efficiency bounds},
     journal = {Issledovaniya po Prikladnoi Matematike i Informatike},
     pages = {25--35},
     year = {1984},
     volume = {12},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUIPM_1984_12_12_a3/}
}