1. Aberrant blood vessels as a factor in lower ureteral obstruction; preliminary report;Hyams;Surg., Gynec. & Obst.,1929
2. Discussion;Hyams;J. Urol.,1936
3. Vascular obstruction of ureter in juveniles;Campbell;Am. J. Surg.,1933
4. Vascular obstruction of ureter in children;Campbell;J. Urol.,1936
5. Clinical Pediatric Urology;Campbell,1951