Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_224_4_a9, author = {V. V. Petrov and A. V. Zaporozhets}, title = {A principle for evolving systems}, journal = {Doklady Akademii Nauk}, pages = {779--782}, publisher = {mathdoc}, volume = {224}, number = {4}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_4_a9/} }
V. V. Petrov; A. V. Zaporozhets. A principle for evolving systems. Doklady Akademii Nauk, Tome 224 (1975) no. 4, pp. 779-782. http://geodesic.mathdoc.fr/item/DAN_1975_224_4_a9/