1Edward G Hoffman. Jig and Fixture Design. Fourth Edition.Albany, USA: Delmar Publishers. 1996.
2Zhong Kangmin, Guo Peiquan. Orthogonal reinforcement mechanism and hydraulic drive. Proceedings of tenth world ongress on the theory of machines and mechanisms(Vol5).Oulu, Finland: Oulu University Press, 1999, 2037 - 2042.
