1. The patient as a person;Heschel,1964
2. From The Insecurity of Freedom: Essays on Human Existence,1972
3. Lumbar disc stimulation (provocation discography);Endres,2005
4. Disc degeneration. Its frequency and relationship to symptoms;Lawrence;Ann Rheum Dis,1969
5. The Munkford investigation;Hult;Acta Orthop Scand Suppl,1954