1. Forced oscillations and bifurcations;Takens;Comm. Math. Inst., Rijksuniversiteit Utrecht,1974
2. Bifurcation of the limit cycle of a family of plane vector fields;Bogdanov;Tr. Semin. im. I. G. Petrovskogo,1976
3. Versal deformation of a singularity of a vector field on the plane in the case of zero eigenvalues;Bogdanov;Tr. Semin. im. I. G. Petrovskogo,1976
4. Versal deformations of equivariant vector fields for the cases of symmetry of order 2 and 3;Horozov;Tr. Semin. im. I. G. Petrovskogo,1979
5. Applications of Centre Manifold Theory;Carr,1982