M. Hasan, Е. Kuznetsov, A. Almatar, and A. Khadzhidi. “Study of a Radius of Action and Sprinkler Density Distribution”. Helix - The Scientific Explorer | Peer Reviewed Bimonthly International Journal, vol. 10, no. 02, Apr. 2020, pp. 112-6, https://helixscientific.pub/index.php/home/article/view/119.