1. Morbidity of Twins;Pathology of Multiple Pregnancy;1994
2. Mortality of Twins;Pathology of Multiple Pregnancy;1994
3. Obstetric Aspects of Multiple Pregnancy;Pathology of Multiple Pregnancy;1994
4. Maternal Recognition of Twin Pregnancy;Acta geneticae medicae et gemellologiae: twin research;1988-04
5. The Northwestern University Twin Study. VIII: On the Causes and Care of Multiple Pregnancy;Acta geneticae medicae et gemellologiae: twin research;1988-01