TY  - JOUR
AU  - Charinthip Hengkrawit
AU  - Vichian Laohakosol
AU  - Patanee Udomkavanich
TI  - Rational Recursive Equations Characterizing Cotangent-tangent and Hyperbolic Cotangent-tangent Functions
JO  - Bulletin of the Malaysian Mathematical Society
PY  - 2010
VL  - 33
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/BMMS_2010_33_3_a7/
ID  - BMMS_2010_33_3_a7
ER  -