„Calibration and Reference Blocks Used in Nondestructive Ultrasound Examination, According to New European Union Requirements“, Ann_UGAL_MMS, Bd. 29, Nr. 1, S. 63–66, Mai 2006, Zugegriffen: Nov. 02, 2026. Verfügbar unter: https://ojs.ugal.ro/index.php/mms/article/view/3230