GUNČAGA, Ján; BRANDL, Matthias. Some methods of problem solving in historical mathematical textbooks. IARTEM e-journal, Kongsberg, Norway, v. 10, n. 1-2, p. 78–90, 2019. DOI: 10.21344/iartem.v10i1-2.716. Disponível em: https://www.iartemejournal.org/index.php/IARTEM/article/view/716.. Acesso em: 29 jun. 2025.