Generators of quasiperiodic oscillations with three-dimensional phase spaceA.P. Kuznetsov, S.P. Kuznetsov, E. Mosekilde and N.V. StankevichEur. Phys. J. Special Topics, 222 10 (2013) 2391-2398DOI: https://doi.org/10.1140/epjst/e2013-02023-x