BJÖRK, P.; HALONEN, J. The World of Friendship Forest. Open Schools Journal for Open Science, [S. l.], v. 2, n. 2, p. 32–38, 2019. DOI: 10.12681/osj.20389. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/openschoolsjournal/article/view/20389. Acesso em: 28 apr. 2024.