M. E. Jacobs, E. M. J. Koeweiden, T. J. J. H. Slooff, R. Huiskes, and J. R. van Horn, “Plain radiographs inadequate for evaluation of the cement-bone interface in the hip prosthesis A cadaver study of femoral stems”, ActaO, vol. 60, no. 5, pp. 541–543, Jan. 1989.