Dikavicius, V. and Butkus, J. (1999) “An Assessment of Rare Gas Filling Quality of Insulating Glazing Units of the Windows by Ultrasonic Method”, Elektronika ir Elektrotechnika, 23(5). Available at: https://eejournal.ktu.lt/index.php/elt/article/view/16724 (Accessed: 26September2020).