Lill, H. et al. 2004. Mennen clamp-on plate fixation of periprosthetic fractures of the humerus after shoulder arthroplasty—a report on 3 patients. Acta Orthopaedica. 75, 6 (Jan. 2004), 772–774. DOI:https://doi.org/10.1080/00016470410004184.