Yalvaç, T. Hatice. “On Weak Continuity and Weak \(\delta\)-Continuity”. Anal. Numér. Théor. Approx. 19, no. 2 (August 1, 1990): 177–183. Accessed September 3, 2025. https://www.ictp.acad.ro/jnaat/journal/article/view/1990-vol19-no2-art14.