1. ISO Standard 14839-1. Mechanical vibration - Vibrations of rotating machinery equipped with active magnetic bearings - Part 1: Vocabulary, 05 2002.
2. ISO Standard 14839-2. Mechanical vibration - Vibrations of rotating machinery equipped with active magnetic bearings - Part 2: Evaluation of vibration, 05 2004.
3. ISO Standard 14839-3. Mechanical vibration - Vibrations of rotating machinery equipped with active magnetic bearings - Part 3: Evaluation of stability margin, 01 2005.
4. ISO Standard 14839-4. Mechanical vibration - Vibrations of rotating machinery equipped with active magnetic bearings - Part 4: Technical guidelines, system design (Draft), 09 2006.
5. API Standard 617. Axial and centrifugal compressors and expander-compressors for petroleum, chemical and gas industry services, July 2002.