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55Q05 Homotopy groups, general; sets of homotopy classes (3 articles)

• Vokřínek, Lukáš: Computing the abelian heap of unpointed stable homotopy classes of maps. (English). Archivum Mathematicum, vol. 49 (2013), issue 5, pp. 359-368
• Demaria, Davide Carlo: A combinatorial interpretation of homotopy groups of polyhedra. (English). In: Frolík, Zdeněk (ed.): Proceedings of the 10th Winter School on Abstract Analysis. Circolo Matematico di Palermo, Palermo, 1982. pp. [35]-39
• Čech, Eduard Höherdimensionale Homotopiegruppen (French) [Homotopy groups of higher dimensions]. Verh. des int. Kongr. Zürich 2 (1932), 203