Jibril, S.; Sirat, H. M.; Idris, M. M.; Mohammad, A.; Muhammad, K. J. Ultrasonic Assisted Extraction and Gas Chromatography-Tandem Mass Spectroscopy (GC-MS MS) Analysis of Extracts from Four Cassia Species. J. Sci. Math. Lett. 2020, 8 (2), 1-7. https://doi.org/10.37134/jsml.vol8.2.1.2020.