10Hasan Ocak. Fault Detection, Diagnosis and Prognosis of Rolling Element Bearings: Frequency Domain Methods and Hidden Markov Modeling[D]. U. S. A.: Case Western Reserve University, 2004.
5Karlsen N, Aggidis G.Review and state of the art of rege- nerative liquid ring. pumps.Fluid Machinery Congress 6-7 October 2014.Woodhead Publishing, 2014.