„Studies and Research on Determining the Cause of the Cracking of X60 Pipeline in the Expanding Operation“, Ann_UGAL_MMS, Bd. 41, Nr. 2, S. 11–14, Juni 2018, Zugegriffen: Nov. 02, 2026. Verfügbar unter: https://ojs.ugal.ro/index.php/mms/article/view/1428