AN, HY ed. Internal Fixation of Osteoporotic Bone. 2002, 232-236
BAUMGAERTNER, M. R. The value of the tip-apex distance in predicting failure of fixation of peritrochanteric fracture of the hip. J. Bone Joint Surg. 1995, 77-A, 1058-1064
GOODMANN, S. B. Norian SRS Cement Augmentation in hip fracture treatment. Clin. Orthop. 1998, 348, 42-50