1. The magnetic noise of polyphase induction motors;Alger;Trans. Amer. Inst. Elect. Engin.,1954
2. Calculation of the magnetic noise of polyphase induction motors;Alger;J.A.S.A.,1956
3. Alvarez, F.F., Noise and Vibration Problems of Reciprocating Machinery, M.I.T. Dept. of Naval Arch. and Mar. Engin., M.S. Thesis, May 1964; results exerpted in
4. Noise of involute helical gears;Attia;J. Engin. for Industry,1969