ANALYSIS OF BONE STRENGTH USING ULTRASOUND SYSTEM Authors P. R. Hellhake D. Rabin G. W. Pratt Jr. J. A. Seder Downloads PDF Issue 2 International Symposium on Biomechanics in Sports (1984) Section Methodology License Authors can retain copyright, while granting the International Society of Biomechanics in Sports (ISBS) the right of first publication.