P. Majer et S. Terracini, ON THE EXISTENCE OF INFINITELY MANY PERIODIC-SOLUTIONS TO SOME PROBLEMS OF N-BODY TYPE, Communications on pure and applied mathematics, 48(4), 1995, pp. 449-470
We prove the existence of infinitely many periodic solutions with pres
cribed period to a class of problems of n-body type. (C) 1995 John Wil
ey & Sons, Inc.