2024-09-302024-09-302016-01-010373-3505https://doi.org/10.4418/2016.71.2.5https://hdl.handle.net/11452/45443In the present investigation, we find estimates on the coefficients broken vertical bar a(2) broken vertical bar and broken vertical bar a(3) broken vertical bar for functions in the function class S-Sigma ( lambda,h). The results presented in this paper improve or generalize the recent work of Magesh and Yamini.eninfo:eu-repo/semantics/closedAccessGeneral subclassAnalytic and univalent functionsBi-univalent functionsBi-starlike and bi-convex functionsCoefficient boundsScience & technologyPhysical sciencesMathematicsArticle000393407700005536171210.4418/2016.71.2.5