1. Investigation of conditions of meshing of spiral bevel gears (in Russian);Litvin,1962
2. Improvement of conditions of meshing of spiral bevel gears (in Russian);Litvin,1964
3. Basic geometry and tooth contact of hypoid gears;Baxter;Ind. Math.,1961
4. Understanding Tooth Contact Analysis,1981
5. Kimos: Zahnkontaktanalyse für Kegelräder;Klingelnberg,1996