@article{UZERU_1986_1_a9,
     author = {M. G. Abrahamian and S. V. Harutyunyan},
     title = {Modulations! instability of spiral wave-packet and stationary periodical wave-envelopes},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {70--77},
     publisher = {mathdoc},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1986_1_a9/}
}