@article{CMFD_2012_45_a7,
     author = {G. A. Leonov and N. V. Kuznetsov},
     title = {Hidden oscillations in dynamical systems. 16 {Hilbert's} problem, {Aizerman's} and {Kalman's} conjectures, hidden attractors in {Chua's} circuits},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {105--121},
     publisher = {mathdoc},
     volume = {45},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2012_45_a7/}
}