1. PHP5, pages 893–1000 (Multiple Pregnancies-Superfetation and Superfecundation, Vanishing Twin Phenomenon, Fetus Papyraceous, Twin-to-Twin Transfusion Syndrome, Acardiac Twins, Conjoined Twins, Sacrococcygeal Teratoma and Epignathus, Cytogenetics and Heterokaryotypic Monozygotic Twins, Chimerism and Mosaicism, Triplets and Higher Births, Morbidity and Mortality).
2. Bajoria R, Wigglesworth J, Fisk NM. Angioarchitecture of monochorionic placentas in relation to the twin-twin transfusion syndrome. Am J Obstet Gynecol 1995;172:856–863.
3. Bejar R, Vigliocco G, Gramajo H, et al. Antenatal origin of neurologic damage in newborn infants. Part II. Multiple gestations. Am J Obstet Gynecol 1990;162:1230–1236.
4. Bendon RW. Twin transfusion syndrome: pathological studies of the monochorionic placenta in liveborn twins and of the perinatal autopsy in monochorionic twin pairs. Pediatr Pathol Lab Med 1995;15:363–376.
5. Benirschke K. Chimerism, mosaicism and hybrids. In: Human Genetics, Proceedings Fourth International Congress Human Genetics, Paris, Excerpta Medica, Amsterdam, 1971:212–231.