Richard Michell: Which Oil?: Choosing the right oils & greases for your veteran, brass era, vintage, antique, classic or collector car. 2011, ISBN 978-1-84584-365-6 (google.com).
espacenet.com
worldwide.espacenet.com
Patent US5129422A: Transmission breather control valve. Angemeldet am 23. August 1991, veröffentlicht am 14. Juli 1992, Anmelder: General Motors Corp, Erfinder: Ellard D. Davidson Jr, Lounes Rabhi.
Patent US8454719B2: Transmission breather assembly. Angemeldet am 20. August 2010, veröffentlicht am 4. Juni 2013, Anmelder: Kenneth C. Tesner, Hoang L. Vo, Dale Cattell, GM Global Tech Operations Inc, Erfinder: Kenneth C. Tesner et Al.
