Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1990__65_3_140185, author = {Rolf P\"utter}, title = {On the nodal lines of second eigenfunctions of the fixed membrane problem.}, journal = {Commentarii mathematici Helvetici}, pages = {96--103}, publisher = {mathdoc}, volume = {65}, number = {3}, year = {1990}, zbl = {0705.35003}, url = {http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140185/} }
Rolf Pütter. On the nodal lines of second eigenfunctions of the fixed membrane problem.. Commentarii mathematici Helvetici, Tome 65 (1990) no. 3, pp. 96-103. http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140185/