HAUTALA, Suvi-Maria; MÖTLIK, Madli; NIKULA, Sanna. Olomuodon muutos. LUMAT-B: International Journal on Math, Science and Technology Education, [S. l.], v. 3, n. 1, 2018. Disponível em: https://journals.helsinki.fi/lumatb/article/view/1151. Acesso em: 11 huhti. 2025.