1. A. T. Onufriev, ?Theory of motion of a vortex ring acted on by gravity. Lift of an atomic mushroom cloud,? Zh. Prikl. Mekh. Tekh. Fiz., No. 2 (1967).
2. G. Simons and R. Larson, ?Formation of vortex rings in a stratified atmosphere,? Phys. Fluids,17, No. 1 (1974).
3. B. I. Zaslavskii, ?Initial stage in the evolution of a thermic,? Zh. Prikl. Mekh. Tekh. Fiz., No. 6 (1982).
4. V. A. Gorev, P. A. Gusev, and Ya. K. Troshin, ?Effect of formation conditions on the motion of a cloud rising due to buoyant forces,? Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 5 (1976).
5. V. A. Gorev, P. A. Gusev, and Ya. K. Troshin, ?Modeling of lift and combustion of a cloud of light gas in the atmosphere,? Dokl. Akad. Nauk SSSR,205, No. 4 (1972).