• [1]

    J. M. Jowett,M. Month, S. Turner(eds.),Nonlinear Dynamics Aspects of Particle Accelerators, Springer-Ver-lag , Berlin ,1986.[2]A. J. Dragt,Lectures on Nonlinear Orbit Dynamics,AIP Conf. Proc. 87, New York, 1982,p. 147.[3]A. J. Dragt,Nucl.lnstr. Meth. ,A258(1987),339.[4]M.Berz. Nucl.lnstr. Meth. ,A298(1990),426.[5]M.Berz. Particle Accelerators 24(1989),109.[6]A. J. Lichtenberg M. A. Lieberman, Regular and Stochastic Motion,孙ringer-Verlag, New York,1983.