Valdez, M. T., C. F. Agreira, C. M. Ferreira, and F. P. Maciel Barbosa. “Teaching, Learning and Exploring the Use of Project-Based Learning”. Elektronika Ir Elektrotechnika, vol. 105, no. 9, Oct. 2010, pp. 117-20, https://eejournal.ktu.lt/index.php/elt/article/view/9194.