1. Cowan ST: Cowan & Steel’s Manual for the Identification of Medical Bacteria. Cambridge University Press, London 1974.
2. Egan J: Bacteriology of summer mastitis secretions from cattle in Eire. Vet. Rec. 1986, 119, (358).
3. Fiévez L: Etude comparée des souches de Spha-erophorus necrophorus isolees chez 1’Homme et chez ľ Animal. (Comparative studies of strains of Sphaerophorus necrophorus isolated from man and animals). Presses Acad. Europ., Bruxelles 1963.
4. Hillerton JE, Bramley AJ, Watson CA: The epidemiology of summer mastitis; a survey of clinical cases. Brit. vet. J. 1987, 143, (520–530).
5. Holdeman LV, Moore WEC: Anaerobe Laboratory Manual, 2nd ed. Virginia Polytechnic Institute and State University Anaerobe Laboratory, Blacksburg, Virginia 1973.