Vuorikari R, Koper R. Evidence of Cross-boundary Use and Reuse of Digital Educational Resources. Int. J. Emerg. Technol. Learn. [Internet]. 2009 Nov. 30 [cited 2024 Jul. 18];4(4):pp. 51-56. Available from: https://online-journals.org/index.php/i-jet/article/view/1028