Hemen Dutta และ Sunday Oluwafemi Olatunji. (2019) Fekete-Szego Problem for Certain Classes of Analytic Functions Associated with Petal Type Domain and Modified Sigmoid Function. <i>Science & Technology Asia</i>, <i>24</i>(4), 144-152.Hemen Dutta และ Sunday Oluwafemi Olatunji. "Fekete-Szego Problem for Certain Classes of Analytic Functions Associated with Petal Type Domain and Modified Sigmoid Function". Science & Technology Asia 24 (2019):144-152.Hemen Dutta และ Sunday Oluwafemi Olatunji. Fekete-Szego Problem for Certain Classes of Analytic Functions Associated with Petal Type Domain and Modified Sigmoid Function. กองบริหารการวิจัย:ม.ป.ท. 2019.