%0 Journal Article %A M. Aripov %A A. S. Matyakubov %T To the qualitative properties of solution of system equations not in divergence form of polytrophic filtration in variable density %J Nanosistemy: fizika, himiâ, matematika %D 2017 %P 317-322 %V 8 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2017_8_3_a2/ %G en %F NANO_2017_8_3_a2