https://vital.lib.tsu.ru/vital/access/manager/Index en-us 5 Estimation of the present value of m-year term life annuity using information on average of life https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000927193 Wed 01 Feb 2023 13:45:13 KRAT ]]> Estimation of present value of whole life annuity using information about expectation of life https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000647918 Tue 19 Mar 2019 18:09:18 KRAT ]]>