@article{VMUMM_2019_5_a8,
     author = {A. Kh. Stash},
     title = {Some properties of oscillation indicators of solutions to a two-dimensional system},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {48--51},
     year = {2019},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2019_5_a8/}
}