@misc{effertz_friction_spot_2015, 
author={Effertz, P.},
title={Friction Spot Welding of 7050-T76 Aluminium Alloy (Masterarbeit)},
year={2015},
howpublished = {master thesis: Universidade de Lisboa, FB Werkstoffmechanik},
note = {Online available at: \url{} (DOI). Effertz, P.: Friction Spot Welding of 7050-T76 Aluminium Alloy (Masterarbeit). Universidade de Lisboa, FB Werkstoffmechanik, 2015.}}