@article{ZNSL_2001_282_a7,
     author = {V. V. Kapustin},
     title = {Nonselfadjoint extensions of symmetric operators},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {92--105},
     publisher = {mathdoc},
     volume = {282},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2001_282_a7/}
}