P. Kosecki

Multicentre double blind clinical trial on ranitidine for gastroduodenal ulcer.

J. Pachlewski, P. Radwan, J. Hasik, 1981, Hepato-gastroenterology.

The treatment of duodenal and gastric ulcer with ranitidine--a controlled, multicentre clinical trial.

J. Pachlewski, P. Radwan, J. Hasik, 1982, Deutsche Zeitschrift fur Verdauungs- und Stoffwechselkrankheiten.