@article{DAN_1979_245_6_a0,
     author = {N. L. Vasilevskii and R. Trujillo},
     title = {On $\Phi_R$-operators in matrix algebras of operators},
     journal = {Doklady Akademii Nauk},
     pages = {1289--1292},
     publisher = {mathdoc},
     volume = {245},
     number = {6},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_245_6_a0/}
}