In the present investigation, we introduce certain new subclasses of the class of biunivalent functions in the open unit disc defined by quasi-subordination. We obtained estimates on the initial coefficients and for the functions in these subclasses. The results present in this paper would generalize and improve those in related works of several earlier authors.
"Certain Subclasses of Bi-Close-to-Convex Functions Associated with Quasi-Subordination." Abstr. Appl. Anal. 2019 1 - 6, 2019. https://doi.org/10.1155/2019/6947020