Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AA_1991_3_5_a0, author = {V. M. Babich}, title = {Hadamard's ansatz, its analogues, generalizations and applications}, journal = {Algebra i analiz}, pages = {1--37}, publisher = {mathdoc}, volume = {3}, number = {5}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1991_3_5_a0/} }
V. M. Babich. Hadamard's ansatz, its analogues, generalizations and applications. Algebra i analiz, Tome 3 (1991) no. 5, pp. 1-37. http://geodesic.mathdoc.fr/item/AA_1991_3_5_a0/