“A Near-Real-Time Ficin-Based Enzyme Assay for Biomonitoring of Heavy Metals Pollution in Waters Near the Langkawi UNESCO Kilim Karst Geoforest Park”. 2023. Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353) 7 (2): 15-19. https://doi.org/10.54987/bessm.v7i2.912.