Ali, G., G. Shabbir, S. Karim, M. Khan, A. Nisar, and M. Ahmad. “Morphological Investigations of Oxide Nanotubes Grown on Zircaloy-4 Cladding”. The Nucleus, vol. 53, no. 2, June 2016, pp. 78-81, http://202.83.167.189/index.php/Nucleus/article/view/149.