@article{GDZPPN001172077, title = {On the Stability of the Ritz Procedure for Nonlinear Problems.}, journal = {Numerische Mathematik}, volume = {22}, year = {1974}, pages = {305-310}, zbl = {0302.65050}, url = {http://dml.mathdoc.fr/item/GDZPPN001172077} }
Schiop, A.I. On the Stability of the Ritz Procedure for Nonlinear Problems.. Numerische Mathematik, Tome 22 (1974) pp. 305-310. http://gdmltest.u-ga.fr/item/GDZPPN001172077/