H. S. Jayanna, R. M P, N. C S, and A. R. Lamani, “Effect of grain size and temperature on DC electrical conductivity of tin oxide nanoparticles synthesized by gel combustion method”, Int J of Adv in Sci Res, vol. 1, no. 10, pp. 371–375, Dec. 2015, doi: 10.7439/ijasr.v1i10.2695.