DOBREV, N.; KOLEVA-REKALOVA, E.; NANKIN, R. The Sarmatian Carbonate Tempestites from Kaliakra Cape (NE Bulgaria) – a Real Risk to Its Stability. Proceedings of the Bulgarian Academy of Sciences, Sofia, Bulgaria, v. 75, n. 3, p. 396–404, 2022. DOI: 10.7546/CRABS.2022.03.09. Disponível em: https://www.proceedings.bas.bg/index.php/cr/article/view/47. Acesso em: 13 oct. 2026.