Hashim, Norhayati, et al. “Synthesis and Characterisation of Zinc Aluminium-Layered Double Hydroxide-L-Phenylalanate Nanocomposites Using Ion Exchange Method”. EDUCATUM Journal of Science, Mathematics and Technology, vol. 4, no. 1, June 2017, pp. 24-33, https://doi.org/10.37134/ejsmt.vol4.1.4.2017.