Mikhail Nikulin, Vassilly Voinov Unbiased estimation of reliability in stress-strength model and similar problems [Abstract] Some problems related to an application of the unbiased estimators for sampling inspection, lifetime and reliability testing are discussed. Continuous and discrete, univariate and multivariate parametric probability models are considered. [AMS classification] 62D05, 62F10, 62J05, 62S25 [Keywords and phrases] unbiased estimation, life distributions, multivariate failure rates, multivariate polynomial laws, sampling inspection, reliability and quality of products, stress-strength model English, 12 pp. [E-mail of contact person] nikou@mi2s.u-bordeaux2.fr