Dang, Thi Bich Van, and Duc Thinh Vo. “Generalized Studniarski Derivatives and Its Applications”. Dong Thap University Journal of Science (số cũ), no. 31 (April 25, 2018): 60–64. Accessed October 15, 2026. https://dthujs.vn/index.php/dthujs/article/view/365.