Vynnychuk, S., and V. Misko. “Improvement of the Quadratic Sieve Method on the Basis of the Extended Factor Base and Using Available Quantity of B – Smooth Numbers”. Information Technology and Security, vol. 5, no. 2, Dec. 2017, pp. 67-75, doi:10.20535/2411-1031.2017.5.2.136966.