Klos, Tiburtius V S, Melinda K Harman, Roger J J Devilee, Scott A Banks, and Frank F Cook. 1999. “Patellar Tendon Graft Position After Anterior Cruciate Ligament Reconstruction: Interobserver Variability on Lateral Radiographs”. Acta Orthopaedica 70 (2):180-84. https://doi.org/10.3109/17453679909011259.