Krüger, Viggo, et al. “Learning How to Learn: The Role of Music and Other Expressive Arts in Responding to Early Leaving from Education and Training (ELET) in the STALWARTS Project”. Voices: A World Forum for Music Therapy, vol. 20, no. 3, Oct. 2020, p. 17, doi:10.15845/voices.v20i3.3084.