et.al, S.-S. J. “A Study on A Smart Firefighting Helmet Capable Of Video / Audio Transmission Based On The Firefighting Standard Disaster System”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 6, Apr. 2021, pp. 493-7, https://turcomat.org/index.php/turkbilmat/article/view/1885.