@misc{zettler_material_flow_2006, 
author={Zettler, R.,Donath, T.,dos Santos, J.,Beckmann, F.,Lohwasser, D.},
title={Material flow in friction stir butt welded aluminium alloys},
year={2006},
howpublished = {conference lecture: Saint Sauveur (CDN); 10.-13.10.2006},
note = {Online available at: \url{} (DOI). Zettler, R.; Donath, T.; dos Santos, J.; Beckmann, F.; Lohwasser, D.: Material flow in friction stir butt welded aluminium alloys. 6th International Friction Stir Welding Symposium. Saint Sauveur (CDN), 2006.}}