Biswas, Ranita, et al. “Rhombic Dodecahedron Grid—Coordinate System and 3D Digital Object Definitions.”10.1007/978-3-030-14085-4_3__21st IAPR International Conference on Discrete Geometry for Computer Imagery, vol. 11414, Springer Berlin Heidelberg, 2019, pp. 27–37, doi:10.1007/978-3-030-14085-4_3.