Dutov, Alexei A., Denis A. Nikitin, Maria N. Mishchenko, Anastasia N. Semenova, Anastasia V. Martynova, Anna V. Sverkunova, Ekaterina N. Fedorova, Olga N. Konovalova, Julia L. Lukyanova, Alena V. Yermolina, and Joseph S Pinelis. “HPLC Analysis of Proline and 4-Hydroxyproline in Biological Fluids”. Sorbtsionnye i Khromatograficheskie Protsessy 13, no. 2 (November 20, 2019). Accessed December 5, 2025. https://journals.vsu.ru/sorpchrom/article/view/1607.