“Empirical Equation of Tight Binding Model Parameter to Calculate Bandgap of Semiconducting Single Wall Carbon Nanotube”, J. Elec. Engg., vol. 37, no. 2, pp. 4–9, Nov. 2012, Accessed: Jun. 30, 2026. [Online]. Available: https://www.banglajol.info/index.php/JEE/article/view/12671