1. Traite sur divers accouchemens laborieux et sur les polypes de la matrice;Herbiniaux,1782
2. Schilderungen neuer Backenformen und ihres Verhaltens im Leben;Killian,1854
3. A new contribution to the history and etiology of spondylolisthesis;Naugebauer;New Syndenham Society Selected Monographs,1888
4. Instability in spondylolisthesis;Friberg;Orthopedics,1991
5. The instability associated with disk degeneration in lumbar spine;Knutsson;Acta Radiol,1944