\Bibitem{VoiPet81} \by O.~V.~Voinov, A.~G.~Petrov \paper Physical model and equation of motion for a two-phase medium taking into account random particle (bubbles) motion \jour Prikl. Mekh. Tekh. Fiz. \yr 1981 \vol 22 \issue 6 \pages 78--87 \mathnet{http://mi.mathnet.ru/pmtf6077} \transl \jour J. Appl. Mech. Tech. Phys. \yr 1981 \vol 22 \issue 6 \pages 803--811 \crossref{https://doi.org/10.1007/BF00906110}