Petrila, Titus. “A Sufficient Univalence Criterion for Holomorphic Functions”. Rev. Anal. Numér. Théor. Approx. 21, no. 1 (February 1, 1992): 67–68. Accessed May 6, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1992-vol21-no1-art9.