@article{1077468778,
author = {Gilbert, Richard C.},
title = {The denseness of the extreme points of the generalized
resolvents of a symmetric operator},
journal = {Duke Math. J.},
volume = {26},
number = {1},
year = {1959},
pages = { 683-691},
language = {en},
url = {http://dml.mathdoc.fr/item/1077468778}
}
Gilbert, Richard C. The denseness of the extreme points of the generalized
resolvents of a symmetric operator. Duke Math. J., Tome 26 (1959) no. 1, pp. 683-691. http://gdmltest.u-ga.fr/item/1077468778/