Sýs, Milan, Simona Žabčí­ková, Libor Červenka, and Karel Vytřas. 2017. “Comparison of Adsorptive With Extractive Stripping Voltammetry in Electrochemical Determination of Retinol”. Potravinarstvo Slovak Journal of Food Sciences 11 (1):96-105. https://doi.org/10.5219/713.