Heavy metals level in the surficial sediment from Perai River of Penang, Malaysia (FOO et al., 2021)
https://iopscience.iop.org/article/10.1088/1755-1315/944/1/012052/meta
Assessment of Elements in Surface Sediments of the Perai River, Penang Using Neutron Activation Technique (WOO et al., 2020)
https://jsnm.nuclearmalaysia.gov.my/index.php/jsnm/article/download/171/158
A review on the accumulation of heavy metals in coastal sediment of Peninsular Malaysia (YUNUS et al., 2020)
https://www.emerald.com/insight/content/doi/10.1108/EFCC-03-2020-0003/full/html
C. Mei-Ling HAMILTON - Environmental Geochemistry Issues 