1. Thordon Bearings Inc. thordonbearings.com/.
2. VESCONITE Rudder and Stern tube bearings - Design Manual, pp. 0–19.
3. Engineering manual;Tenures;ORKOT Eng. Man.,2007
4. Design, Machining and Installation Manual - Feroform Bearings Manual, TENMAT. p. 49, 2010.
5. Thordon Engineering Manual Version E2006.1, Thordon Bearings Inc., 2006, p. 54.