1. Telmo Santos, Pedro Vilaça, Luísa Quintino, Developments in NDT for Detecting Imperfections in Friction Stir Welds in Aluminium Alloys, Technical University of Lisbon, IST, Lisbon, Portugal, 2006, pp. 1–10.
2. Friction Spot Joining of Aluminium Alloy AA 5052 To Pre-Holed Steel AISI 1006 By Extrusion Aluminium Into A Rivet Head Die
3. Hossein Taheri, Margaret Kilpatrick, Matthew Norvalls, Warren J. Harper, Lucas W. Koester, Timothy Bigelow and Leonard J. Bond, Investigation of Nondestructive Testing Methods for Friction StirWelding, Metals journal, 29 May 2019, pp. 1–22.
4. Adam Pietras, Marek St. Węglowski, Imperfections in FSW joints and NDT methods of their detection, Bulletin of the Institute of Welding, 2014, pp. 23–32.
5. Automated surface inspection of friction stir welds by means of structured light projection