1. K. Hoefer, Experiments on vacuum pumps for condensers, VDI Forschung, No. 253, 1922.
2. G. Von Pawel-Rammigen, Experiments on ejectors, M.S. Dissertation, Pennsylvania State University, 1936.
3. Jet pumps with liquid drive;Folsom;Chem. Eng. Progr.,1952
4. Studies on liquid jet gas pumps;Takashima;J. Sci. Res. Inst.,1952
5. J.H. Witte, Mixing shocks and their influence on the design of liquid–gas ejectors, M.S. Dissertation, Delft University, 1962.