Haroutunian, M. E. ., L. A. . Ter-Vardanyan, and A. R. Muradyan. “Upper and Lower Bounds of Biometric Identification E-Capacity”. Mathematical Problems of Computer Science, vol. 37, Dec. 2021, pp. 7-16, http://93.187.165.2/index.php/mpcs/article/view/245.