Gladimir V. G. Baranoski Jon G. Rokne Peter Shirley Trond Trondsen Rui Bastos Simulating the aurora. 43-59 2003 14 Journal of Visualization and Computer Animation 1 http://dx.doi.org/10.1002/vis.304 db/journals/jvca/jvca14.html#BaranoskiRSTB03