Cita APA (7a ed.)

Ribeiro Ferreira Nunes, A. M. (1991). Separatrix surfaces and invariant manifolds of a class of integrable Hamiltonian systems and their perturbations. Publicacions de la Universitat Autònoma de Barcelona.

Cita Chicago Style (17a ed.)

Ribeiro Ferreira Nunes, Ana María. Separatrix Surfaces and Invariant Manifolds of a Class of Integrable Hamiltonian Systems and Their Perturbations. Bellaterra: Publicacions de la Universitat Autònoma de Barcelona, 1991.

Cita MLA (9a ed.)

Ribeiro Ferreira Nunes, Ana María. Separatrix Surfaces and Invariant Manifolds of a Class of Integrable Hamiltonian Systems and Their Perturbations. Publicacions de la Universitat Autònoma de Barcelona, 1991.