@article{DAN_1965_161_4_a7,
     author = {M. A. Naimark},
     title = {On commutative algebras of operators in the space $\Pi_k$},
     journal = {Doklady Akademii Nauk},
     pages = {767--770},
     publisher = {mathdoc},
     volume = {161},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_4_a7/}
}