1. The newborn;Beare,1979
2. Advantages and complications of umbilical artery catheterization in the newborn;Cochran;Pediatrics,1968
3. Umbilical artery catheterization in the newborn;Gupta;Arch Dis Child,1968
4. Cateterizzazione dei vasi ombelicali nel neonato;Moretti;Riv Ital Pediatr,1976
5. Umbilical artery catheterization in newboms;Wesström;Acta Paediatr Scand,1979