1. Technical aspects of intraluminal pH metry in man: current status and recommendations;Emde, C.; Garner, A.; Blum, A.L.;Gut,1987
2. An endoscopic procedure for accurate localisation of intraluminal pH electrodes;McLaughlan, G.; Buchanan, N.M.M.; Crean, G.P.; McColl, K.E.L.;Endoscopy,1987
3. Effect of polymer coating on faecal recovery of ingested 5-amino salicylic acid in patients with ulcerative colitis SIR, The otherwise scholarly article of A L Mardini et;al (Gut,1987