Methodological substantiation of teaching mathematics to university students on the basis of the activity approach. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 32, p. 242–249, 2011. DOI: 10.31812/educdim.4574. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/4574. Acesso em: 6 dec. 2025.