1. Primary teratomas in the lateral retroperitoneal spaces;Palumbo;Surgery,1949
2. Retroperitoneal teratomas in infancy and childhood;Arnheim;Pediatrics,1951
3. Retroperitoneal teratoma;Engel;Cancer,1968
4. Retroperitoneal tumors;Snyder,1969
5. Teratomas in infancy and childhood;Wooley;Z. Kinderchir.,1967