Hoa, N. D., N. S. Dang, T. T. L. Dang, T. T. H. Nguyen, M. H. Chu, and V. D. Nguyen. “Effect of Bias Voltage and Carrier Gas on the Hydrogen Gas-Sensing Properties of Tungsten Oxide Nanobeads”. Communications in Physics, vol. 31, no. 3, Apr. 2021, p. 321, doi:10.15625/0868-3166/15809.