TIMOTHY OLOYEDE OPOOLA, EZEKIEL ABIODUN OYEKAN, SEYI DEBORAH OLUWASEGUN, PETER OLUWAFEMI ADEPOJU. New subfamilies of univalent functions defined by Opoola differential operator and connected with modified Sigmoid function. Malaya J. Mat. [Internet]. 2023 Oct. 1 [cited 2024 Dec. 22];11(S):53-69. Available from: https://www.malayajournal.org/index.php/mjm/article/view/1957