YENORKAR, S. M. “AMMONIA GAS(NH3) SENSING OF SnO2-CuO MIXED OXIDE THICK FILM AT OPERATING TEMPERATURE”. Innovare Journal of Sciences, vol. 8, no. 7, May 2020, pp. 42-44, https://journals.innovareacademics.in/index.php/ijs/article/view/38525.