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Koshkin G.M., Gubina Oxana V. «Estimation of present value of n-year life annuity for endowment insurance» // Tomsk State University Journal of Control and Computer Science 2020. №50 C.39-46
Gubina Oxana V., Koshkin Gennady M. «Nonparametric estimation of actuarial present value of deferred life annuity» // Tomsk State University Journal of Control and Computer Science 2019. №46 C.49-55
