1. Dobbeltsidig quadricepsruptur (in Danish);Appelquist;Ugeskr Læger,1983
2. Rupture of both quadriceps extensor cruris tendons;Chichester;BMJ,1909
3. Bilateral, simultaneous, spontaneous rupture of the quadriceps tendon — a report of three cases and a review of the literature;Dhar;Injury,1988
4. Ruptur af quadricepssenen og quadricepsmusklen (in Danish);Hovgaard;Ugeskr Læger,1987
5. Bilateral simultaneous rupture of the quadriceps tendons;Keogh;Clin Orthop,1988