found: Work cat.: 2005485048: Ruaux, J. 2030, le papy-crash? c2005.
found: LC database, Mar. 23, 2006(population aging; population ageing; greying; graying)
found: Longevity science web site, Mar. 23, 2006(in article by Leonid A. Gavrilov and Patrick Heuveline: aging of population (also known as demographic aging and population aging) is a summary term for shifts in the age distribution (i.e. age structure) of a population toward older ages)
found: Wikipedia, Mar. 23, 2006(in demographics population ageing or population ageing in North American English occurs when the average age of a region's population gets older)
found: The World Bank thesaurus, Mar. 23, 2006(Aging population; used for aging society)
found: Pressat, R. The dict. of demography, 1985:p. 7 (ageing (of the population); alteration in the age structure of a population in the direction of an increase in the relative importance of old persons ... usually reflected in an increase in the average age of the population)