Virtual communities of inquiry (VCoI) for learning basic algorithmic structures with open simulator and Scratch4OS: a case study from the secondary education in Greece. - Nikolaos Pellas; Efstratios Peroutseas; Ioannis Kazanidis (BCI, 2013)

Leveraging Scratch4SL and Second Life to motivate high school students' participation in introductory programming courses: findings from a case study. - Nikolaos Pellas; Efstratios Peroutseas (New Rev. Hypermedia Multim., 2017)