Naning, F. H., S. A. Malik, and F. L. Supian. “Determination of Isotherm of Supramolecule Calix[4]arenes Monolayer Using Langmuir-Blodgett Technique”. Journal of Science and Mathematics Letters, vol. 4, no. 1, Jan. 2019, pp. 1-7, https://ojs.upsi.edu.my/index.php/JSML/article/view/346.