@article{DAN_1995_341_2_a2,
     author = {A. Yu. Kolesov},
     title = {Relaxation cycles of a nonlinear wave equation that smoothly},
     journal = {Doklady Akademii Nauk},
     pages = {158--160},
     publisher = {mathdoc},
     volume = {341},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_341_2_a2/}
}