@article{IVM_1985_12_a9,
     author = {V. I. Plotnikov and I. M. Starobinets},
     title = {Operator inclusions in smooth extremal problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--48},
     publisher = {mathdoc},
     number = {12},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_12_a9/}
}