Salvi, Massimiliano, et al. “Ultrastructure of Periprosthetic Dacron Knee Ligament Tissue: Two Cases of Ruptured Anterior Cruciate Ligament Reconstruction”. Acta Orthopaedica, vol. 62, no. 2, Jan. 1991, pp. 174-7, doi:10.3109/17453679108999251.