G. V. Cochran, M. W. Johnson, M. P. Kadaba, F. Vosburgh, M. W. Ferguson-Pell, V. R.
                           Palmieri, 1985, Piezoelectric internal fixation devices: a new approach to electrical
                           augmentation of osteogenesis, J. Orthop. Res. Off. Publ. Orthop. Res. Soc., Vol. vol
                           3, No. 4, pp. 508-513
