Dr. Sh. Valedbagi (2012) “Ab Initio Density Functional Theory Investigation of Structural and Electronic Properties of Double-Wall Zinc Oxide Nanotubes”, Global Journal of Science Frontier Research, 12(A6), pp. 45–50. Available at: https://journalofscience.org/index.php/GJSFR/article/view/402 (Accessed: 5 May 2024).