PENCHEVA, E.; NIKOLAEVA, M. The medieval settlement in the Petrova niva locality, Sboryanovo archaeological reserve. Contributions to the Bulgarian Archeology | Приноси към българската археология, [S. l.], v. 13, p. 77–124, 2023. DOI: 10.53250/cba13.77-124. Disponível em: https://publications.naim.bg/index.php/CBA/article/view/364. Acesso em: 11 feb. 2025.