@article{GDZPPN002023687,
title = {The Effect of Quadrature Errors in the Numerical Solution of Boundary Value Problems by Variational Techniques.},
journal = {Aequationes mathematicae},
volume = {2},
year = {1969},
pages = {247-270},
zbl = {0196.17601},
url = {http://dml.mathdoc.fr/item/GDZPPN002023687}
}
Herbold, R.J.; Schultz, M.H.; Varga, R. The Effect of Quadrature Errors in the Numerical Solution of Boundary Value Problems by Variational Techniques.. Aequationes mathematicae, Tome 2 (1969) pp. 247-270. http://gdmltest.u-ga.fr/item/GDZPPN002023687/