TY - JOUR AU - Ambrosetti, Antonio AU - Tanaka, Kazunaga AU - Vitillaro, Enzo TI - Periodic solutions with prescribed energy for some keplerian $N$-body problems JO - Annales de l'I.H.P. Analyse non linéaire PY - 1994 DA - 1994/// SP - 613 EP - 632 VL - 11 IS - 6 PB - Gauthier-Villars UR - http://archive.numdam.org/item/AIHPC_1994__11_6_613_0/ UR - https://zbmath.org/?q=an%3A0855.70006 UR - https://www.ams.org/mathscinet-getitem?mr=1310624 LA - en ID - AIHPC_1994__11_6_613_0 ER -