Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 73. (Budapest 1981)

Embey-Isztin, A. ; Noske-Fazekas, G.: On the chemistry of the large phenocrysts in the tuff of Godóvár (Börzsöny Mts., Hungary)

Figs. 2 A-B. Traverse across a typical clinopyroxene. A remarkable change in the composition between the core (analyses No. 7-12) and the outer zones can be observed