1. Pirumov, U.G. and Roslyakov, G.S., Gazovaya dinamika sopel (The Gas Dynamics of Nozzles), Moscow: Nauka, 1990.
2. Akhmetov, V.K., Shkadov, V.Ya., and Shkadova, V.P., Izv. Akad. Nauk Mekh. Zhidk. Gaza, 2006, no. 4, p. 19.
3. Gupta, A.K., Lilley, D.G, and Syred, N., Swirl Flows, Abacus Press, 1984. Translated under the title Zakruchennye potoki, Moscow: Mir, 1987.
4. Saffman, F.J., Dinamika vikhrei (Vortex Dynamics), Moscow: Nauchnyi Mir, 2000 (Russ. transl.).
5. Antonov, V.A., Baranov, A.S., and Kondrat’ev, B.P., Izv. Akad. Nauk Mekh. Zhidk. Gaza, 2005, no. 1, p. 81.