Bettiol, Piernicola20052011-09-0720052011-09-072005J. Math. Sci. 144 (2007) 3760-3774https://openscience.sissa.it/handle/1963/1768244879 bytesapplication/pdfen-USSome properties of generating functions obtained by Amann-Conley-Zehnder reductionPreprint