1. Percutaneous ultrasonic lithotripsy of intrahepatic gallstones under endoscopic control;Andreoni;Hepato-gastroenterology,1989
2. Percutaneous sclerosis of gall-bladder;Asfar;Lancet,1989
3. Operative choledochoscopy in common bile duct surgery;Ashby;Annals of the Royal College of Surgeons of England,1985
4. Early post-operative ES for retained common bile duct stones;Askew;Annals of the Royal College of Surgeons of England,1989
5. Sump syndrome following choledochoduodenostomy and its endoscopic treatment;Baker;British Journal of Surgery,1985