Hinrichsen, Christine, and Richard Pospisil. “The Impact of a Smartphone or Tablet Application on Learning Transfer in the Field of Continuing Vocational Training”. Science International Empirical Review 1, no. 2 (November 15, 2021): 57–74. Accessed October 28, 2025. https://mail.sier-journal.com/index.php/SIER/article/view/18.