Sevilla, R., Marco, O., Zhang, Y., Ródenas, J. J., & Tur, M. (2015). Exact 3D boundary representation in finite element analysis based on Cartesian grids independent of the geometry. International Journal for Numerical Methods in Engineering, 103(6), pp. 445-468. doi:10.1002/nme.4914

Sevilla, Rubén, Onofre Marco, Yongjie Zhang, Juan José Ródenas, and Manuel Tur. "Exact 3D Boundary Representation in Finite Element Analysis Based On Cartesian Grids Independent of the Geometry." International Journal for Numerical Methods in Engineering 103, no. 6 (2015): 445-468.

Sevilla, Rubén, et al. "Exact 3D Boundary Representation in Finite Element Analysis Based On Cartesian Grids Independent of the Geometry." International Journal for Numerical Methods in Engineering 103.6 (2015): 445-468.