Bhattarai, J. “X-Ray Photoelectron Spectroscopic Study on the Anodic Passivity of Sputter-Deposited W-Nb Alloys in 12 M HCl Solution”. Journal of Scientific Research, vol. 3, no. 3, Aug. 2011, pp. 457-70, doi:10.3329/jsr.v3i3.7207.