1. Enteroskopie Fiberendoskopie von jejunum and ileum;Classen, M.; Fruihmorgen, P.; Koch, H.; Demling, L.;Dtsch. med. Wschr,1972
2. Intraluminal biopsy of the small intestine: the intestinal biopsy capsule;Crosby, W.H.; Kugler, H.W.;Amer. J. dig. Dis,1957
3. New techniques for speeding small intestinal biopsy;Evans, N.; Farrow, L.J.; Harding, A.; Stewart, J.S.;Gut,1970
4. Crosby small intestinal capsule with radio-opaque tube and latex sheath;Salem, S.N.; Salt, R.H.; Truelove, S.C.,1965
5. Examination of the duodenum and jejunum employing a new fiberoptic enteroscope;Salmon, P.R.; Brown, P.; Burwood, R.; Read, A.E.;Gut,1973