ZEMAN, T.; HRAD, J. Lifelong Learning Courses – Not Just an Alternative Way. Elektronika ir Elektrotechnika, [S. l.], v. 102, n. 6, p. 23-26, 2010. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/9344. Acesso em: 29 sep. 2022.