@article{1103036300,
author = {Bramble, J. H. and Payne, L. E.},
title = {Bounds in the Neumann problem for second order uniformly elliptic operators.},
journal = {Pacific J. Math.},
volume = {12},
number = {4},
year = {1962},
pages = { 823-833},
language = {en},
url = {http://dml.mathdoc.fr/item/1103036300}
}
Bramble, J. H.; Payne, L. E. Bounds in the Neumann problem for second order uniformly elliptic operators.. Pacific J. Math., Tome 12 (1962) no. 4, pp. 823-833. http://gdmltest.u-ga.fr/item/1103036300/