1. Bla?kovi?, D. (Editor): Epidémia Encefalitídy v Ro??avskom Prírodnom Ohnisku Nákaz, Vydavatelstvo Slovenskej Akadémie Vied, Bratislava1954 (in Slovak with English, summary).
2. Clarke, D. H., andJ. Casals: Amer. J. trop. Med. Hyg.7, 561 (1958).
3. Gre?iková, M.: Acta Virol.2, 188 (1958).
4. Oker-Blom, N.: Ann. Med. exp. Fenn.34, 309 (1956).
5. Oker-Blom, N., L. Kääriäinen, M. Brummer-Korvenkontio, andP. Weckström: A paper presented at the Symposium on the Biology of Viruses of the Tick-borne Encephalitis Complex, Smolenice near Bratislava, Oct. 11?14, 1960.