1. Pathology of multiple pregnancy;Baldwin,1991
2. Intraabdominal foetus in foetu;Lord;Journal of Pathology and Bacteriology,1956
3. Fetus in fetu: angiographic, CBT and ultrasound findings;Kadir;Fortschritte auf dem Gebiet der Röntgenstrahlen,1981
4. Fetus-in-fetu;Nocera;American Journal of Roentgenology,1982
5. Intraventricular fetus in fetu;Afshar;Journal of Neurosurgery,1982