Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1962_143_4_a20, author = {V. M. Fridkin}, title = {Iso-opaque in electro-photography}, journal = {Doklady Akademii Nauk}, pages = {825--828}, publisher = {mathdoc}, volume = {143}, number = {4}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_143_4_a20/} }
V. M. Fridkin. Iso-opaque in electro-photography. Doklady Akademii Nauk, Tome 143 (1962) no. 4, pp. 825-828. http://geodesic.mathdoc.fr/item/DAN_1962_143_4_a20/