1. Double formations of the pelves of the kidneys and the ureters. Embryology, occurrence and clinical significance;Nordmark;Acta Radiol.,1948
2. Anomalies of the ureter;Campbell,1963
3. Experiences with ectopic ureteroceles;Johnston;Brit. J. Urol.,1969
4. Vesico-ureteric reflux;Johnston,1968
5. Vesicoureteral reflux;Hutch,1968