This script computes the (x,y,z) Gauss quadrature nodes and weights for a tetrahedron with user-specied vertices.
Greg von Winckel (2023). Gauss Quadrature for Tetrahedra (https://www.mathworks.com/matlabcentral/fileexchange/9389-gauss-quadrature-for-tetrahedra), MATLAB Central File Exchange. Retrieved .
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Sign of weights depended on order of vertices. This has been fixed.