1. The mechanism of action of lactulose in portalsystemic encephalopathy. Non-ionic diffusion of ammonia in the canine colon;Bircher, J.; Haemmerli, U.P.; Trabert, E.; Largiad6r, F.; Moccetti, T.;Rev. europ. ttudes clin. biol,1971
2. Treatment of chronic portal-systemic encephalopathy with lactulose;Bircher, J.; Muller, J.; Guggenheim, P.; Haemmerli, U.P.;Lancet,1966
3. Encephalopathy after portacaval shunting managed with lactulose;Brown, H.; Trey, C.; McDermott, Jr, W.V.;Amer. J. Surg,1970
4. Lactulose treatment ofhepaticencephalopathy in outpatients;Brown, H.; Trey, C.; McDermott, Jr, W.V.;Arch. Surg,1971
5. Ammonia absorption from the human colon: role of non-ionic diffusion;Castell, D.O.; Moore, E.W.;Clin. Res,1968