BANSEVIČIUS, R.; VIRBALIS, J. A. Relief Formation on the Plane: Principal Solutions, Investigation and Application for the Blind. Elektronika ir Elektrotechnika, [S. l.], v. 64, n. 8, p. 46-46, 2005. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10539. Acesso em: 29 mar. 2024.