Bog, Tino; Zander, Nils; Kollmannsberger, Stefan; Rank, Ernst (October 2015). "Normal contact with high order finite elements and a fictitious contact material". Computers & Mathematics with Applications. 70 (7): 1370–1390. doi:10.1016/j.camwa.2015.04.020. ISSN0898-1221.
Bog, Tino; Zander, Nils; Kollmannsberger, Stefan; Rank, Ernst (October 2015). "Normal contact with high order finite elements and a fictitious contact material". Computers & Mathematics with Applications. 70 (7): 1370–1390. doi:10.1016/j.camwa.2015.04.020. ISSN0898-1221.