ANGELOVA, D. Quaternary geology, geomorphology and tectonics in the Ogosta river valley system, the Danubian plain (Bulgaria). Bulletin of the Geological Society of Greece, [S. l.], v. 34, n. 1, p. 55–60, 2001. DOI: 10.12681/bgsg.16943. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/16943. Acesso em: 20 dec. 2024.