DIKAVICIUS, V.; BUTKUS, J. An Assessment of Rare Gas Filling Quality of Insulating Glazing Units of the Windows by Ultrasonic Method. Elektronika ir Elektrotechnika, [S. l.], v. 23, n. 5, 1999. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/16724. Acesso em: 26 sep. 2020.