Randomised trial of single and repeated fibrin glue compared with injection of polidocanol in treatment of bleeding peptic ulcer. - Rutgeerts,P.; Rauws,E.; Wara,P.; Swain,P.; Hoos,A.; Solleder,E.; Halttunen,J.; Bobrilla,G.; Richter,G.; Prassler,R. (Lancet, 1997)