Chehreh, A. , Grätzel, M. , Klein, M. , Bergmann, J. , Walther, F.. "Fatigue Behavior of Friction Stir Welded EN AW 5754 Aluminum Alloy Using Load Increase Procedure". World Academy of Science, Engineering and Technology, Open Science Index 146, International Journal of Materials and Metallurgical Engineering (2019), 13(2), 108 - 113.