Schaefer, L., and F. Bittmann. “Mechanotendography in Achillodynia Shows Reduced Oscillation Variability of Pre-Loaded Achilles Tendon: A Pilot Study”. European Journal of Translational Myology, vol. 30, no. 2, June 2020, pp. 247-5, doi:10.4081/ejtm.2020.8983.