@article{GDZPPN002463288,
title = {On a Class of Three Dimensional Radially Symmetric Positive Definite Functions.},
journal = {Metrika},
volume = {36},
year = {1989},
pages = {327-330},
zbl = {0694.42019},
url = {http://dml.mathdoc.fr/item/GDZPPN002463288}
}
Jalali-Naini, A.; Watkins, A.J. On a Class of Three Dimensional Radially Symmetric Positive Definite Functions.. Metrika, Tome 36 (1989) pp. 327-330. http://gdmltest.u-ga.fr/item/GDZPPN002463288/