Hussain, A., M. W. Baig, and N. Mustafa. “DFT Studies of Indium Nanoclusters, Nanotubes and Their Interaction With Molecular Hydrogen”. The Nucleus, vol. 52, no. 4, Dec. 2015, pp. 185-91, http://202.83.167.189/index.php/Nucleus/article/view/638.