1. Buyarov , A.I. 1982 .Choice of hydrodynamic regime for drying of dispersed materials in swirling streams. PhD Thesis , p. 23 (in Russian )
2. Dzhunisbekov , M.Sh 1983 .Modelling and optimising of multipurpose apparatus with impinging swirling streams. PhD Thesis , Moscow , p. 21 (in Russian )