DVS 1162-1995 DVS Educational Institution Metal Materials Welder Examination Regulations
DVS 1191-1999 Training and testing of personnel in the field of welding, cutting and coating (FTB) DVS and DVS-PersZert Directory of approved educational institutions
DVS-EWF 1107-1997 Implementing rules for the EWF Guidelines for the training, testing and qualification of welding personnel in EU and EFTA countries