Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1971__28_166168, author = {Henrik Stetkaer}, title = {Invariant {Pseudo-Differential} {Operators.}}, journal = {Mathematica Scandinavica}, pages = {105--123}, publisher = {mathdoc}, volume = {28}, year = {1971}, zbl = {0226.58010}, url = {http://geodesic.mathdoc.fr/item/MS2_1971__28_166168/} }
Henrik Stetkaer. Invariant Pseudo-Differential Operators.. Mathematica Scandinavica, Tome 28 (1971), pp. 105-123. http://geodesic.mathdoc.fr/item/MS2_1971__28_166168/