共 2 条
[1]
Langford W. F.(1979)Periodic and steady-state mode interactions lead to tori SIAM J. Appl. Math. 37 22-48
[2]
Volkov D. Y.(1988)Invariant tori bifurcation from an equilibrium state in the presence of zero eigenvalues Vestnik Leningrad Univ. Ser. I 2 102-103