GUROVA, Maria; BONSALL, Clive. ‘Pre-Neolithic’ in Southeast Europe: a Bulgarian perspective. Documenta Praehistorica, Ljubljana, SI, v. 41, p. 95–109, 2014. DOI: 10.4312/dp.41.5. Disponível em: https://journals.uni-lj.si/DocumentaPraehistorica/article/view/41.5. Acesso em: 24 mar. 2025.