@article{IM2_2002_66_6_a2,
     author = {A. Yu. Kolesov and N. Kh. Rozov},
     title = {Multifrequency parametric resonance in a~non-linear wave equation},
     journal = {Izvestiya. Mathematics },
     pages = {1131--1145},
     publisher = {mathdoc},
     volume = {66},
     number = {6},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2002_66_6_a2/}
}