%0 Journal Article %A L. V. Gargyants %A O. S. Rozanova %A M. K. Turzynsky %T The Riemann problem for the main model cases of the Euler---Poisson equations %J Contemporary Mathematics. Fundamental Directions %D 2024 %P 38-52 %V 70 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2024_70_1_a3/ %G ru %F CMFD_2024_70_1_a3