Liu, F.-C. and Tai, W.-S. (1994) “Approximate Tyalor polynomials and differentiation of functions”, Topological Methods in Nonlinear Analysis, 3(1), pp. 189–196. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.1994.009 (Accessed: 3 July 2024).