Hristov, Peter; Sirakova, Daniela; Mitkov, Ivan; Spassov, Nikolai; Radoslavov, Georgi (2018). „Balkan brachicerous cattle – the first domesticated cattle in Europe”. Mitochondrial DNA Part A. 29 (1): 56—61. PMID27931135. S2CID205974350. doi:10.1080/24701394.2016.1238901.
nih.gov
ncbi.nlm.nih.gov
Hristov, Peter; Sirakova, Daniela; Mitkov, Ivan; Spassov, Nikolai; Radoslavov, Georgi (2018). „Balkan brachicerous cattle – the first domesticated cattle in Europe”. Mitochondrial DNA Part A. 29 (1): 56—61. PMID27931135. S2CID205974350. doi:10.1080/24701394.2016.1238901.
Hristov, Peter; Sirakova, Daniela; Mitkov, Ivan; Spassov, Nikolai; Radoslavov, Georgi (2018). „Balkan brachicerous cattle – the first domesticated cattle in Europe”. Mitochondrial DNA Part A. 29 (1): 56—61. PMID27931135. S2CID205974350. doi:10.1080/24701394.2016.1238901.