Morfill, G. E. Theory and Complex Plasmas, MPI for Extraterrestrial Physics, Max Planck Society;
Petrov, O. F., Myasnikov, M. I., D’yachkov, L. G., Vasiliev, M. M., Fortov, V. E., Savin, S. F., et al. (2012). Coulomb clusters of dust particles in a cusp magnetic trap under microgravity conditions. Physical Review E, 86(3 Part 2): 036404, pp. 1-10. doi:10.1103/PhysRevE.86.036404.