@article{700161,
title = {The convergence of a new method for calculating lower bounds to eigenvalues},
booktitle = {Equadiff 6},
series = {GDML\_Books},
publisher = {J. E. Purkyn\v e University, Department of Mathematics},
address = {Brno},
year = {1986},
pages = {[303]-308},
mrnumber = {MR0877140},
zbl = {0609.65072},
url = {http://dml.mathdoc.fr/item/700161}
}
Goerisch, Friedrich; Albrecht, Julius. The convergence of a new method for calculating lower bounds to eigenvalues, dans Equadiff 6, GDML_Books, (1986), pp. [303]-308. http://gdmltest.u-ga.fr/item/700161/