Dyuzhikov, S.A. and Bortsov, U.S. 2018. The Life Cycle of the Family: the Main Approaches to the Classification and the Problems of Substantive Content. Humanities of the South of Russia. 7, 3 (Jun. 2018), 101-110. DOI:https://doi.org/10.23683/2227-8656.2018.3.7.