@book{Siegel1984,
author = {Siegel, J.S. and Davidson, M.},
title= {Demographic and socioeconomic aspects of aging in the United States},
year = {1984},
address = {Washington, D.C.},
publisher = {U.S. Bureau of the Census},
series = {(Series P-23: Special Studies 138 in Current Population Reports)},
}