T. G. Sinyavskaya, A. A. Tregubova, and M. Z. Muzayev, “ACTUARIAL VALUATION OF PENSION RIGHTS IN VOLUNTARY PENSION INSURANCE”, Развитие территорий, vol. 1, no. 3, pp. 71–79, Mar. 2022, doi: 10.32324/2412-8945-2022-3-71-79.