1. IEC 60034: Rotating Electric Machines—Part 6, Methods of Cooling (IEC, Geneva 1991)
2. NEMA MG 1;National Electrical Manufacturers Association,2011
3. H. Sako, K. Koga, H. Maeda, M. Onoda, K. Tanaka, Y. Nakamura: Development of larger output indirectly hydrogen-cooled turbine generator with high heat transfer main insulation. In: Proc. CIGRE Bienn. Conf. (2016), Rap. A1-116
4. G.C. Stone, E.A. Boulter, I. Culbert, H. Dhirna: Electrical insulation for rotating machines—design, evaluation, aging, testing, and repair (Wiley, New York 2004)
5. IEC 60034-1: Rotating Electrical Machines—Part 1: Rating and Performance (IEC, Geneva 2010)