Ebtesam Abdullah Alousta. "Local Functions and Composition With Euclidean Smooth Functions". Bani Waleed University Journal of Humanities and Applied Sciences 8, no. 5 (ديسمبر 19, 2023): 530–540. تاريخ الوصول أغسطس 23, 2025. https://jhas-bwu.com/index.php/bwjhas/article/view/107.