@article{1214433846,
author = {Ralston, J. V.},
title = {Approximate eigenfunctions of the Laplacian},
journal = {J. Differential Geom.},
volume = {12},
number = {1},
year = {1977},
pages = { 87-100},
language = {en},
url = {http://dml.mathdoc.fr/item/1214433846}
}
Ralston, J. V. Approximate eigenfunctions of the Laplacian. J. Differential Geom., Tome 12 (1977) no. 1, pp. 87-100. http://gdmltest.u-ga.fr/item/1214433846/