1. Novak J. Glatter Diffuser bei Zentrifugal Pumpen. Vaneless Diffuser in Centrifugal Pumps, Zeitschrift fuer das gesamte Turbinenwesen Heft 24; 1907.
2. Govardhan M, Moorthy BSN, Gopalakrishnan G. A Preliminary Report on the Rotating Vaneless Diffuser for a Centrifugal Impeller. Proceedings of the First International Conference on Centrifugal Compressor, IIT Madras, Chennai, India; 1978.
3. Lindner P. Aerodynamic Tests on Centrifugal Process Compressors – Influence of Diffuser Diameter Ratio, Axial Pitch and Impeller Cutback. ASME Journal of Engineering for Power 1983;105: 910-919.
4. Ribaud Yves, Fradin Christian. Re-evaluation of Researches on the Free Rotating Vaneless Diffuser. ASME International Gas Turbine and Aero-engine Congress and Exposition, Toronto, Canada; 1989.
5. Seralathan S. Studies on the Rotating Vaneless Diffuser of a Centrifugal Impeller. M. Tech Thesis Report, Thermal Turbomachinery Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India; 2008.