@article{GDZPPN002190001,
title = {Dirichlet finite biharmonic functions on the Poincar\'e N-ball.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {272},
year = {1975},
pages = {92-101},
zbl = {0296.31013},
url = {http://dml.mathdoc.fr/item/GDZPPN002190001}
}
Sario, L.; Wang, C.; Hada, D. Dirichlet finite biharmonic functions on the Poincaré N-ball.. Journal für die reine und angewandte Mathematik, Tome 272 (1975) pp. 92-101. http://gdmltest.u-ga.fr/item/GDZPPN002190001/