@article{1183528871,
author = {Stenger, William},
title = {An inequality for the eigenvalues of a class of self-adjoint operators},
journal = {Bull. Amer. Math. Soc.},
volume = {73},
number = {6},
year = {1967},
pages = { 487-490},
language = {en},
url = {http://dml.mathdoc.fr/item/1183528871}
}
Stenger, William. An inequality for the eigenvalues of a class of self-adjoint operators. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 487-490. http://gdmltest.u-ga.fr/item/1183528871/