CHRISTODOULOPOULOS (Γ. ΧΡΙΣΤΟΔΟΥΛΟΠΟΥΛΟΣ) G., ROUBIES (Ν. ΡΟΥΜΠΙΕΣ) N., KARATZIAS (Χ. ΚΑΡΑΤΖΙΑΣ) H., and PAPASTERIADIS (Α. ΠΑΠΑΣΤΕΡΙΑΔΗΣ) A., “Vitamin A concentrations in dairy cows of Thessaloniki ’s county”, J Hellenic Vet Med Soc, vol. 52, no. 4, pp. 257–263, Jan. 2018.