[1]
Padmanabhan, K.S., Rajagopal, R. and Selvaraj, C. 2003. Sufficient conditions for close-to-convexity of an analytic function in the unit disc. Tamkang Journal of Mathematics. 34, 1 (Mar. 2003), 17–20. DOI:https://doi.org/10.5556/j.tkjm.34.2003.268.