@article{DAN_1978_240_1_a3,
     author = {A. I. Loginov and V. S. Shulman},
     title = {Irreducible $J$-symmetric algebras of operators in spaces with an indefinite metric},
     journal = {Doklady Akademii Nauk},
     pages = {21--23},
     publisher = {mathdoc},
     volume = {240},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_1_a3/}
}