@article{DAN_1971_200_5_a0,
     author = {T. Ya. Azizov},
     title = {Invariant subspaces and completeness criteria for the root vector system of $J$-dissipative operators in the {Pontrjagin} space $\Pi_\kappa$},
     journal = {Doklady Akademii Nauk},
     pages = {1015--1017},
     publisher = {mathdoc},
     volume = {200},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_5_a0/}
}