J. R. Skau, B. Rodrigues, F. Oliveira Rosa, R. Correa Araujo, R. G. Fontinele, and R. Rodrigues de Souza, “Histomorphometrical analysis on the effects of two therapeutic ultrasound intensities on fracture healing in aged rats [I]”, PTM, vol. 27, no. 2, Sep. 2017.