TY  - JOUR
TI  - On sufficient conditions for close-to-convexity of order 2−r
AU  - YILDIZ, Ä.
AU  - AKYAR, A.
AU  - MERT, O.
JO  - Sigma Journal of Engineering and Natural Sciences
PY  - 2018
VL  - 9
SP  - 341
EP  - 348
DO  - 
ER  -