@article{IVM_1976_4_a1,
     author = {I. Ya. Guberman},
     title = {A~class of linear operators in {a~Banach} {space.~I}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {17--26},
     publisher = {mathdoc},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_4_a1/}
}