TY  - JOUR
AU  - Walter Shur
TI  - The Last Digit of ${2n \choose n}$ and $\sum {n \choose i}{2n-2i \choose n-i}$
JO  - The electronic journal of combinatorics
PY  - 1997
VL  - 4
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.37236/1331/
DO  - 10.37236/1331
ID  - 10_37236_1331
ER  -