Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1973_213_1_a17, author = {V. N. Popov and A. A. Kiselev}, title = {Diagram technique in the general perturbation theory}, journal = {Doklady Akademii Nauk}, pages = {70--73}, publisher = {mathdoc}, volume = {213}, number = {1}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_213_1_a17/} }
V. N. Popov; A. A. Kiselev. Diagram technique in the general perturbation theory. Doklady Akademii Nauk, Tome 213 (1973) no. 1, pp. 70-73. http://geodesic.mathdoc.fr/item/DAN_1973_213_1_a17/