Aouf, M. K., et al. “Coefficient Bounds for Multivalent Classes of Starlike and Convex Functions Defined by Higher-Order Derivatives and Complex Order”. Ukrains’kyi Matematychnyi Zhurnal, vol. 74, no. 10, Nov. 2022, pp. 1308-16, https://doi.org/10.37863/umzh.v74i10.6258.