TY  - JOUR
AU  - Shi-Mei Ma
TI  - A family of two-variable derivative polynomials for tangent and secant
JO  - The electronic journal of combinatorics
PY  - 2013
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.37236/2344/
DO  - 10.37236/2344
ID  - 10_37236_2344
ER  -