STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA, cilt.65, sa.1, ss.57-66, 2020 (ESCI)
In this work, we use the Faber polynomial expansion by a new method to find upper bounds for vertical bar b(n)vertical bar coefficients for meromorphic bi-univalent functions class Sigma' which is defined by subordination. Further, we generalize and improve some of the previously published results.