@misc{szelagowski_underwater_welding_1989, 
author={Szelagowski, P.},
title={Underwater welding and cutting},
year={1989},
howpublished = {conference lecture: Goeteburg (S); November 1, 1989},
note = {Online available at: \url{} (DOI). Szelagowski, P.: Underwater welding and cutting. Chalmers University of Technology. Goeteburg (S), 1989.}}