Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{FORUM_1991__3_2_186389, author = {Rainer Schimming}, title = {Harmonic {Differential} {Operators.}}, journal = {Forum mathematicum}, pages = {177--204}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1991}, zbl = {0719.58040}, url = {http://geodesic.mathdoc.fr/item/FORUM_1991__3_2_186389/} }
Rainer Schimming. Harmonic Differential Operators.. Forum mathematicum, Tome 3 (1991) no. 2, pp. 177-204. http://geodesic.mathdoc.fr/item/FORUM_1991__3_2_186389/