1. Swyer, R. P.: The organization of perinatal care with particular reference to the newborn. In: Neonatology. Avery, G. B. (ed.). p. 15 Philadelphia-Toronto: Lipincott 1975
2. Apgar, V.: A proposal for a new method of evaluation of the newborn infant. Curr. Res. Anesth. 32, 4 (1953)
3. Berendes, H. W.: Cerebrale Spätschäden nach perinataler Asphyxie. Gynäkologie 1, 89 (1968)
4. Drage, J. S., Berendes, H. W.: Apgar score and outcome of the newborn. Pediat. Clin. N. Amer. 13, 635 (1966)
5. Drage, J. S., Kennedy, C., Berendes, H., Schwarz, B. K., Weiss, W.: The Apgar score as an index of infant mortality. Develop. Med. Child. Neurol. 8, 141 (1966)