Haller, George; Ponsioen, Sten «Nonlinear normal modes and spectral submanifolds: Existence, uniqueness and use in model reduction». Nonlinear Dynamics, 86, 3, 2016, pàg. 1493–1534. arXiv: 1602.00560. DOI: 10.1007/s11071-016-2974-z.
Haller, George; Ponsioen, Sten «Nonlinear normal modes and spectral submanifolds: Existence, uniqueness and use in model reduction». Nonlinear Dynamics, 86, 3, 2016, pàg. 1493–1534. arXiv: 1602.00560. DOI: 10.1007/s11071-016-2974-z.