DANCKWERTS, Rainer; VOGEL, Dankwart. Extremwertprobleme: Bemerkungen zur (Wieder-)Belebung eines alten Themas. mathematica didactica , [S. l.], v. 28, n. 1, p. 15–22, 2005. DOI: 10.18716/ojs/md/2005.1047. Disponível em: https://journals.ub.uni-koeln.de/index.php/mathematica_didactica/article/view/1047. Acesso em: 23 nov. 2024.