Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1991_317_5_a18, author = {M. M. Lavrent'ev (Jn.)}, title = {Reconstruction of a piecewise-constant coefficient of the wave}, journal = {Doklady Akademii Nauk}, pages = {1108--1112}, publisher = {mathdoc}, volume = {317}, number = {5}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1991_317_5_a18/} }
M. M. Lavrent'ev (Jn.). Reconstruction of a piecewise-constant coefficient of the wave. Doklady Akademii Nauk, Tome 317 (1991) no. 5, pp. 1108-1112. http://geodesic.mathdoc.fr/item/DAN_1991_317_5_a18/