%0 Journal Article
%A Walter Shur
%T The Last Digit of ${2n \choose n}$ and $\sum {n \choose i}{2n-2i \choose n-i}$
%J The electronic journal of combinatorics
%D 1997
%V 4
%N 2
%U http://geodesic.mathdoc.fr/articles/10.37236/1331/
%R 10.37236/1331
%F 10_37236_1331