@article{DAN_1989_305_1_a8,
     author = {M. M. Malamud},
     title = {Extensions of {Hermitian} sectorial operators and dual pairs of},
     journal = {Doklady Akademii Nauk},
     pages = {35--41},
     publisher = {mathdoc},
     volume = {305},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_305_1_a8/}
}