@article{1103036316,
author = {McKelvey, Robert},
title = {The spectra of minimal self-adjoint extensions of a symmetric operator.},
journal = {Pacific J. Math.},
volume = {12},
number = {4},
year = {1962},
pages = { 1003-1022},
language = {en},
url = {http://dml.mathdoc.fr/item/1103036316}
}
McKelvey, Robert. The spectra of minimal self-adjoint extensions of a symmetric operator.. Pacific J. Math., Tome 12 (1962) no. 4, pp. 1003-1022. http://gdmltest.u-ga.fr/item/1103036316/