Fasulkov, I. et al. 2025. Еarly Pregnancy Diagnosis in Bulgarian Murrah Buffaloes by Measurement of Pregnancy-Associated Glycoproteins (PAGs) in Blood Serum and Milk . Acta Scientiae Veterinariae. 53, (Dec. 2025). DOI:https://doi.org/10.22456/1679-9216.148745.