Fatourou, Eleni, Nikolaos C Zygouris, Thanasis Loukopoulos, and Georgios I Stamoulis. 2018. “Teaching Concurrent Programming Concepts Using Scratch in Primary School: Methodology and Evaluation”. International Journal of Engineering Pedagogy (iJEP) 8 (4):pp. 89-105. https://doi.org/10.3991/ijep.v8i4.8216.