Fegas, R., A. Bensalem, Z. Bettache, and M. Righezza. 2010. “Simultaneous Separation of Quinine and Its Diastereoisomer Quinidine by RP-HPLC”. Asian Journal of Chemistry 22 (2):1587-90. https://asianpubs.org/index.php/ajchem/article/view/11298.