1. Stodola, A.: Dampf- und Gasturbinen. Springer, Berlin (1924)
2. The Basic Data for Centrifugal Compressor. Dresser Machinery, Ltd. (1975)
3. Shlyahtenko, S: Efficiency of different labyrinth seals forms. Aircr. Constr. Rev. Newsl. 2(3) (1947)
4. Deitch, M.: Technical Gas Dynamics, 2nd edn. Energy, Moscow (1974)
5. Scheglyaev, A.: Steam Turbines, 4th edn. Energy, Moscow (1967)