BANAKH, Taras, KUBIŚ, Wiesław, NOVOSAD, Natalia, NOWAK, Magdalena & STROBIN, Filip. Contractive function systems, their attractors and metrization. Topological Methods in Nonlinear Analysis [online]. 1 December 2015, T. 46, nr 2, s. 1029–1066. [accessed 1.4.2023]. DOI 10.12775/TMNA.2015.076.