Horielyshev, S., and P. Volkov. “EVALUATION OF THE CHARACTERISTICS OF THE СOVERT SURVEILLANCE SYSTEMS FOR THE PROTECTION ZONE OF IMPORTANT STATE OBJECTS UNDER EXTERNAL LIGHTING”. Honor and Law, vol. 77, no. 2 (77), Jan. 2022, pp. 42-51, doi:10.33405/2078-7480/2021/2/77/237379.