1. Adler, M. W. (1986): Epidemiology and treatment of penicillinase-producing Neisseria gonorrhoeae. In: Oriel, J.D. and Harris, J.R.W. (eds). Recent Advances in Sexually Transmitted diseases 3. - Churchill Livingstone, Edinburgh: 23?38.
2. Ansink-Schipper, M.S., Bygdeman, S.M., vanKlingerenB. and Sandstrom, E.G. (1988): Serovars, auxotypes and plasmid profiles of PPNG strains with Asian type plasmid isolated in Amsterdam. - Genitourin. Med. 64: 152?155.
3. Bygdeman, S.M. (1987): Polyclonal and monoclonal antibodies applied to the epidemiology of gonococcal infection. In: Young, H. and McMillan, A. (eds). -Immunological diagnosis of Sexually Transmitted Diseases. Marcel Dekker, New York: 117?165.
4. Coghill, D. V., Gaitonde, R., Kelly, G. and Young, H. (1988): Serological classification of Neisseria gonorrhoeae: serovars associated with homosexually acquired infection. In: Poolman, J.T., Zanen, H.C., Meyer, T.F., Heckels, J.E., Makela, P.R.H., Smith, H. and Beuvery, E.C. (eds). - Gonococci and Meningococci, Kluwer Academic Publishers, Dordrecht: 63?72.
5. Coghill, D. Y. and Young, H. (1987): Serological classification of Neisseria gonorrhoeae with monoclonal antibody coagglutination reagents. -Genitourin. Med. 63: 225?232.