@article{IVP_2015_23_4_a2,
     author = {A. P. Kuznetsov and S. P. Kuznetsov and N. V. Stankevich},
     title = {Four-dimensional system with torus attractor birth via saddle-node bifurcation of limit cycles in context of family of blue sky catastrophes},
     journal = {Izvestiya VUZ. Applied Nonlinear Dynamics},
     pages = {32--39},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IVP_2015_23_4_a2/}
}