@article{UZERU_1996_2_a3,
     author = {S. G. Shahinyan and S. R. Hambardzumyan},
     title = {On the non-stability according to acting force},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {30--36},
     publisher = {mathdoc},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1996_2_a3/}
}