1. Haug, R. H.: Type classification of the Group B streptococci by means of Lancefield’s precipitin method, classification of strains of bovine and human origin. Nord. Vet.-Med. 1972, 24, 631–638.
2. Jelinkova, J.: Group B streptococci in the human population. Gurr. Top. Microbiol. Immunol. 1977, 76, 127–165.
3. Jensen, N. E.: Forgæringstyper af gruppe B-streptokokker. (Biochemical types of Group-B streptococci). Nord. Vet.-Med. 1976, 28, 434–444.
4. Jensen, N. E.: The prevalence of Group-B streptococci in human urogenital secretions. Scand. J. infect. Dis. 1979 a, 11, 199–202.
5. Jensen, N. E.: Production and evaluation of antisera for serological type determination of Group-B streptococci by double diffusion in agarose gel. Acta path, microbiol. scand. Sect. B 1979 b, 87, 77–83.