Gubina Okscmo V., Koshkin Gennady M. «Estimation of the actuarial present value of the whole continuous life annuity» // Tomsk State University Journal of Control and Computer Science 2015. №1(30) C.38-43
Koshkin Gennady M., Lankina Nataly V. «Nonparametric estimation of net premium for r-year deferredlife insurance» // 2010. №1(10) C.59-65