I. F. Kadikova, E. V. Lavrentyeva, and V. Y. Karpenko, “Anhydrite as a Filler for the Primers of Nev’yansk Icons: its Origin and Peculiarities of Identification”, APTHA, vol. 15, pp. 744–756, Dec. 2025, Accessed: Feb. 10, 2026. [Online]. Available: https://publ.actual-art.org/aptha/article/view/11208