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Pfeiffer, Friedrich (14 March 2012). "On non-smooth multibody dynamics". Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics. 226 (2): 147–177. doi:10.1177/1464419312438487. S2CID123605632.
Machado, Margarida; Moreira, Pedro; Flores, Paulo; Lankarani, Hamid M. (July 2012). "Compliant contact force models in multibody dynamics: Evolution of the Hertz contact theory". Mechanism and Machine Theory. 53: 99–121. doi:10.1016/j.mechmachtheory.2012.02.010. hdl:1822/19623.
Alves, Janete; Peixinho, Nuno; da Silva, Miguel Tavares; Flores, Paulo; Lankarani, Hamid M. (March 2015). "A comparative study of the viscoelastic constitutive models for frictionless contact interfaces in solids". Mechanism and Machine Theory. 85: 172–188. doi:10.1016/j.mechmachtheory.2014.11.020. hdl:1822/31823.
Pfeiffer, Friedrich (14 March 2012). "On non-smooth multibody dynamics". Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics. 226 (2): 147–177. doi:10.1177/1464419312438487. S2CID123605632.