%0 Journal Article %A E. B. Dynkin %T Non-negative eigenfunctions of the Laplace-Beltrami operator and Brownian motion in certain symmetric spaces %J Doklady Akademii Nauk %D 1961 %P 288-291 %V 141 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_141_2_a8/ %G ru %F DAN_1961_141_2_a8