Estimates of the fourth Hankel determinant for a class of analytic functions with bounded turnings involving
cardioid domains (JNCA)
Volume 22, Number 3, 511-526, 2021
Estimates of the fourth Hankel determinant for a class of analytic functions with bounded turnings involving cardioid domains H. M. Srivastava, Gaganpreet Kaur and Gurmeet Singh