S. L. Andreeva, S. S. Velikanova, N. V. Kozhushkova, S. V. Ovcharova, A. K. Makarova, and O. P. Chernykh, “Archive activities in terms of electronic document authenticity and copy number variation”, AmazInv, vol. 7, no. 17, pp. 531–540, Dec. 2018.