1. Krain, H.
, 1981, “A Study on Centrifugal Impeller and Diffuser Flow,” ASME J. Eng. Power, 103, pp. 688–697.
2. Krain, H., 1984, “Experimental Observations of the Flow in Impellers and Diffusers,” VKI Lecture Series 1984–07.
3. Krain, H., 1999, “High Pressure Ratio Centrifugal Compressor with Transonic Flow,” FEDSM99-7801.
4. Fradin, C., 1988, “Detailed Measurements of the Flow in the Vaned Diffuser of a Backswept Transonic Centrifugal Impeller,” ICAS-88-2.6.2, 16th ICAS, Jerusalem, Israel.
5. Fradin, C., and Janssens, G., 1990, “Detailed Measurements of the Flow Field at the Outlet of a Backswept Transonic Centrifugal Impeller Equipped with a Vaned Diffuser,” ASME Cogen Turbo Power, pp. 249–254.