LUPU, Ilie, and Liubov ZASTINCEANU. “The Set of a Function Values: Methodological and Calculation Aspects”. Acta et Commentationes, Sciences of Education 37, no. 3 (November 4, 2024): 7-16. Accessed May 10, 2025. https://revistaust.upsc.md/index.php/acta_educatie/article/view/1021.