by Friedman, B L
Published in Journal of aging & social policy (1991)

by Rein, Martin, Wörgötter, Andreas, Friedman, Barry L
Year of Publication 1997

by Friedman, Barry L., Hausman, Leonard J.
Published in The American economic review (01.05.1974)

by Friedman, B L
Published in Journal of aging & social policy (1992)

by Friedman, Barry L, Hausman, Leonard J
Published in American Economic Review (1974)

by Friedman, Barry L, Hausman, Leonard J
Year of Publication 01.06.1975

by Rein, Martin, Friedman, Barry L, Wörgötter, Andreas, Leeuwen, Beppo van
Published in De Economist (01.06.1999)