@article{1183529405,
author = {Laha, R. G.},
title = {Nonnegative eigen functions of Laplace-Beltrami operators on symmetric spaces},
journal = {Bull. Amer. Math. Soc.},
volume = {74},
number = {6},
year = {1968},
pages = { 167-170},
language = {en},
url = {http://dml.mathdoc.fr/item/1183529405}
}
Laha, R. G. Nonnegative eigen functions of Laplace-Beltrami operators on symmetric spaces. Bull. Amer. Math. Soc., Tome 74 (1968) no. 6, pp. 167-170. http://gdmltest.u-ga.fr/item/1183529405/