Saarinen, A., P. Seitamaa-Hakkarainen, and K. Hakkarainen. “The Functions and Benefits of the EPortfolio in Craft Education at the Primary Leve”. Design and Technology Education: An International Journal, vol. 21, no. 3, Oct. 2016, pp. 29-40, https://openjournals.ljmu.ac.uk/DATE/article/view/1582.