AGVAANTSEREN, Uranchimeg Julia; HOON, Park Sae. An Analysis of Educational Patents of Innovation For Formal Education. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 10, n. 1, p. 52–62, 2013. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/1143. Acesso em: 29 dec. 2025.