@article{DAN_1976_226_4_a5,
     author = {M. L. Gorbachuk and V. A. Mikhailets},
     title = {Semibounded selfadjoint extensions of symmetric operators},
     journal = {Doklady Akademii Nauk},
     pages = {765--767},
     publisher = {mathdoc},
     volume = {226},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_4_a5/}
}