G. Krempl, D. Bodnar, и A. Hrubos. Advances in Intelligent Data Analysis XIV - 14th Int. Symposium, IDA 2015, St. Etienne, France, том 9385 из Lecture Notes in Computer Science, стр. XXII--XXIII. Springer, (2015)
E. Small, D. Bersier, и M. Salaris. (2012)cite arxiv:1210.0338Comment: 17 pages, 19 figures; accepted for publication in MNRAS. Version with high-resolution figures available at http://www.astro.ljmu.ac.uk/~dfb/Data/small_v1.3.pdf.