[1] Chukanov N V. Springer Netherlands, 2014. 261. doi: 10.1007/978-94-007-7128-4.
[2] Delattre S, Balan E, Lazzeri, et al. Physics & Chemistry of Minerals, 2012, 39(2): 93.
[5] Andrew Putnis, Robert C. Liebermann. Mineralogical Applications of Crystal Field Theory. 2nd ed. Cambridgeshire: Cambridge University Press, 1993. 127.