FILIP, Miuța, et al. “DETERMINATION OF NITRATE AND NITRITE CONTENT IN ZONAR MILK SERUM AND DERIVED DAIRY DRINKS USING ION-PAIR REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY”. Studia Universitatis Babeș-Bolyai Chemia, vol. 64, no. 1, Mar. 2019, pp. 197-06, doi:10.24193/subbchem.2019.1.16.