ONDREJOVIČ, M., MALIAR, T. ., BENKOVIČOVÁ, H. ., & KUBINCOVÁ, J. . (2012). Solid-Phase Extraction for Photometric Determination of Rosmarinic Acid in Lemon Balm (Melissa Officinalis) Extracts. Nova Biotechnologica Et Chimica, 11(1), 62–72. https://doi.org/10.2478/v10296-012-0007-y