Dr. Nisar Khan, Ankita Mangalik, Aamir Khan, Ajay Singhal. “Mapping Socio-Economic Diversity of Kollam (Quilon), India”. International Journal of Advanced Science and Technology, Vol. 29, no. 6s, Apr. 2020, pp. 386 -96, http://sersc.org/journals/index.php/IJAST/article/view/8774.