Voir la notice de l'article provenant de la source Proyecto DML-E: Biblioteca Digital de Matemáticas
@article{CLTM_1975_1975_1_a19, author = {D{\'\i}az, J. B.}, title = {Reflection principles for the iterated {Helmholtz} equation.}, journal = {Collectanea mathematica}, pages = {253-266}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1975}, zbl = {0333.35023}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CLTM_1975_1975_1_a19/} }
Díaz, J. B. Reflection principles for the iterated Helmholtz equation.. Collectanea mathematica, Tome 26 (1975) no. 3. http://geodesic.mathdoc.fr/item/CLTM_1975_1975_1_a19/