%0 Journal Article %A Stanley, Richard P. %T Differential posets %J Journal of the American Mathematical Society %D 1988 %P 919-961 %V 01 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1988-0941434-9/ %R 10.1090/S0894-0347-1988-0941434-9 %F 10_1090_S0894_0347_1988_0941434_9