1. G. Z. Gershuni and E. M. Zhukhovitskii, ?Monotonic and oscillatory instability of a two-layer system of immiscible fluids heated from below,? Dokl. Akad. Nauk SSSR,265, 302 (1982).
2. G. Z. Gershuni, E. M. Zhukhovitskii, and E. A. Pershina, ?Development of convection in some two-layer systems,? in: Convective Flows [in Russian], Perm' Pedagogical Institute, Perm' (1983), p. 3.
3. G. Z. Gershuni and E. M. Zhukhovitskii, ?Convective instability of the equilibrium of a two-layer system with thermally insulated boundaries,? Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 2, 22 (1986).
4. V. V. Alekseev and A. A. Aleksandrov, ?Model of two-dimensional convection in a twolayer fluid,? Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana,9, 837 (1973).
5. L. Kh. Ingel' and I. V. Stogova, ?Perturbations due to thermal inhomogeneities at the interface of two stably stratified media,? Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana,23, 1111 (1987).