@article{DAN_1973_210_4_a6,
     author = {I. I. Tseitlin},
     title = {A generalization of the {Persson-Pietsch} classes of operators},
     journal = {Doklady Akademii Nauk},
     pages = {775--778},
     publisher = {mathdoc},
     volume = {210},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_4_a6/}
}