Mathematical Foundations of Gerontology General theory of health. theory of reliability in the living and nonliving systems. modern methods of analysis of biological age, aging and longevity / Matematicheskie osnovaniya gerontologii Obshchaya teoriya zdorovya, teoriya nadezhnosti v zhivykh i nezhivykh sistemakh, sovremennye metody analiza biologicheskogo vozrasta, stareniya i prodolzhitelnosti zhizni