Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1979_245_6_a8, author = {L. N. Poltavskii}, title = {Finite controllability of infinite systems of pendulums}, journal = {Doklady Akademii Nauk}, pages = {1318--1321}, publisher = {mathdoc}, volume = {245}, number = {6}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_245_6_a8/} }
L. N. Poltavskii. Finite controllability of infinite systems of pendulums. Doklady Akademii Nauk, Tome 245 (1979) no. 6, pp. 1318-1321. http://geodesic.mathdoc.fr/item/DAN_1979_245_6_a8/