1. ADLERSBERG, D., and SCHEIN, J. (1947): Clinical and Pathological Studies in Sprue, J. Amer. med. Ass., i34, 1459.
2. Histological Changes in Duodenal Mucosa in Cceliac Disease: Reversibility During Treatment with a Wheat Gluten-free;ANDERSON, C.M.;Diet, Arch. Dis. Childh,1960
3. BAKER, S. J., and HUGHES, A. (1960): Multiple-retrieving Small-intestinal Biopsy Tube, Lancet, ii, 686.
4. A Multi-purpose Instrument for Suction Biopsy of the (Esophagus;BRANDBORG, L.D.; RUBIN, C.E.; QUINTON, W.E.;Stomach, Small Bowel and Colon, Gastroenterology,1959
5. Untersuchagen uber das Cylinder-epithelium der Darmzotten und seine Bezielung zur Fettrosorption, S. B;BRETTAUER, J.; STEINACH, S.;Akad. Wiss. Wien, math.-nat. Kl,1857