1. Williams obstetricia;Cunningham,1996
2. Macroscopically determined pla-centery conditions in the case of underweight neonates;Ruckhaberle;Zentralbl Gynakol,1997
3. Relationships between the macroscopic placentery conditions and postnatal state in of underweight neonates;Ruckhaberle;Zentralbl Gynakol,1978
4. Fetoplacental function test;Vinall;Ann Clin Biochen,1982
5. The placental insufficiency syndrome;Wulf;Geburts-hilfe Perinatol,1981