2U.Sjoemar,G.Wahl,W.Scautter,D.Pell:"Retrofit of steam turbine with fixed speed induction motor and variable planetary gear",ASME Conference,Baton Rouge/USA,Feb.1999.
3VDI Report Nr.1425:" Speed Control of Turbocompressors",1998.
4U. Sjoemar, G. Wahl, W. Scautter, D. Pell.. " Retrofit of steam turbine with fixed speed induction motor and variable planetary gear", ASME Conference, Baton Rouge/USA, Feb. 1999
5VDI Report Nr. 1425: " Speed Control of Turbocom-pressors", 1998.
