CSORDAS, Hedi. The Development of Pictograms Scientific Visualisation of Otto Neurath’s Picture Language and its Actuality. Opus et Educatio, [S. l.], v. 3, n. 2, 2016. 10.3311/ope.93. Disponível em: https://journals.bme.hu/oee/article/view/38983. Acesso em: 6 jul. 2025.