Zidarova, Sirma Asenova, és Vasil Vulkov Popov. „Patterns of Craniometric Variability of Six Common Species of Shrews (Soricidae: Crocidura, Neomys, Sorex): A Comparison Between Central and Southeast Europe”. Acta Zoologica Academiae Scientiarum Hungaricae 64, no. 3 (augusztus 1, 2018): 259–276. Elérés október 31, 2026. https://ojs3.mtak.hu/index.php/actazool/article/view/452.