HUQ, FAZLUL. “Modular Modelling Analysis of the O-, M- and P-Directing Influences of Substituents in Electrophilic Attack on Aromatic Compounds”. Asian Journal of Chemistry, vol. 19, no. 1, Mar. 2010, pp. 55-66, https://asianpubs.org/index.php/ajchem/article/view/20395.