A. Piazze, E. Henderson, C. Cagno, and R. Valiñas, “Neoplastic stenosis of hepaticojejunostomy with modified Barker technique: Transjejunal percutaneous endoscopic treatment: dilatation and endoprosthesis”, Cir. Urug., vol. 67, no. 1, pp. 47–50, Apr. 1997.