1. Bradstreet, C. M. P., Pereira, M. S., Pollock, T. M.: The organization of a national virological diagnostic service. Progr. med. Virol, 16 241 (1973).
2. Hermann, E. C., jr.: New concepts and developments in applied diagnostic virology. Progr. med. Virol, 17, 221(1974).
3. Hoorn, B., Tyrrell, D. A. J.: Organ cultures in virology. Progr. med. Virol, 11, 408 (1969).
4. Hsiung, G. D.: Diagnostic Virology. Yale Univ. Press 1973.
5. Lennette, D. A., Emmons, R. W., Lennette, E. H.: Rapid diagnosis of mumps virus infections by immunofluorescence methods. J. clin. Microbiol. 2 81 (1975).