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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Comput Methods Appl Mech Eng. 2022 Mar 31;394:114887. doi: 10.1016/j.cma.2022.114887

Fig. 1. Ansatz functions.

Fig. 1

First row shows the standard linear basis functions over the reference tetrahedron, second row shows the bubble function.