Stamboliyska, B., Belishki, S., Haralampiev, N., Yancheva, D., Velcheva, E., Penkova, P., Lederer, A. and Fischer, D. 2023. The Wall Paintings in the Russian Church St. Nicholas in Sofia: a Technological Study by Integrated Analytical Approach. Proceedings of the Bulgarian Academy of Sciences. 76, 3 (Mar. 2023), 377–387. DOI:https://doi.org/10.7546/CRABS.2023.03.06.