Khani , R., Najafzadeh , S., Ebadian , A., & Nikoufar , I. . (2021). The $n$-valent convexity of Frasin integral operators. Ukrains’kyi Matematychnyi Zhurnal, 73(2), 278-282. https://doi.org/10.37863/umzh.v73i2.88