@article{UZERU_1989_1_a4,
     author = {M. S. Gabrielyan and S. G. Shahinyan},
     title = {On the non-stability of differential equation systems in case of small integral perturbations},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {27--32},
     publisher = {mathdoc},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1989_1_a4/}
}