PROK, István; SZIRMAI, Jenő. Simply transitive optimal ball packings for the orientable crystallographic groups of the cubic system. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 47, n. 1, p. 57–64, 2003. Disponível em: https://pp5.omikk.bme.hu/me/article/view/1377. Acesso em: 4 feb. 2025.