MÄRTENS, Kalev; UMBORG, Jaak. Project-based learning in the laboratory of communication and navigation systems. Aviation, [S. l.], v. 16, n. 3, p. 84–87, 2012. DOI: 10.3846/16487788.2012.732322. Disponível em: https://journals.vilniustech.lt/index.php/Aviation/article/view/4363. Acesso em: 9 may. 2025.