M. A. Barnett and A. Silver, "Application of Air Bearings to High-Speed Turbomachinery", Society of Automotive Engineers International, Technical Paper No. 700720 (September 1970), available at sae.org; Scholer Bangs, "Foil Bearings Help Air Passengers Keep their Cool", Power Transmission Design (February 1973).
standardaero.com
"StandardAero". StandardAero. October 19, 2009. Retrieved October 28, 2009.