Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_122_2_a19, author = {G. B. Ravich and B. N. Egorov}, title = {A study of the polymorphism of $\mathrm{N}$-ethyl-3,4-dinitropyrrole}, journal = {Doklady Akademii Nauk}, pages = {250--253}, publisher = {mathdoc}, volume = {122}, number = {2}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_122_2_a19/} }
G. B. Ravich; B. N. Egorov. A study of the polymorphism of $\mathrm{N}$-ethyl-3,4-dinitropyrrole. Doklady Akademii Nauk, Tome 122 (1958) no. 2, pp. 250-253. http://geodesic.mathdoc.fr/item/DAN_1958_122_2_a19/