Stamboliyska, B., Yancheva, D., Guncheva, M., Lumov, N., Argirova, M. and Stoyanov, S. (2026) “Characterization of Organic Materials in Wall Paintings in Bulgaria: A Multi-analytical Approach”, Proceedings of the Bulgarian Academy of Sciences. Sofia, Bulgaria, 79(6), pp. 716–725. doi: 10.7546/CRABS.2026.06.02.