Draganov, Borislav. “THE TRIGONOMETRIC ANALOGUE OF THE TAYLOR’S FORMULA AND ITS APPLICATION”. Ann. Sofia Univ. Fac. Math. and Inf. 96 (December 12, 2004): 141–154. Accessed November 21, 2024. https://stipendii.uni-sofia.bg/index.php/fmi/article/view/168.