Sukhwinder Singh Billing and Sushma Gupta and Sukhjit Singh Dhaliwal, An Application of Differential Subordination to Analytic Functions. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. July 2009, vol. 31(7). 551 - 553 [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/15126.