1. Ammatuna, P., Sinatra, A., Chiarini, A.: Studies on a measles virus variant inducing persistent infections in cultured cells. II. Characteristics of the carrier state in HeLa and Vero cell lines. In preparation.
2. Bather, R., Furesz, J., Fanok, A. G., Gill, S. D., Yarosh, W.: Long term infection of diploid African green monkey brain cells by Schwarz measles vaccine virus. J. gen. Virol.20, 401?405 (1973).
3. Buynak, E. B., Peck, H. M., Creamer, A. A., Goldner, H., Hilleman, M. R.: Differentiation of virulent from avirulent measles strains. Amer. J. Dis. Child.103, 460?473 (1962).
4. Chiarini, A., Ammatuna, P.: Effetto della temperatura di incubazione sulla produzione di virus e di emoagglutinina in colture di cellule HeLa infettate con due varianti del virus morbilloso. In: Atti XIV Congr. Soc. Ital. Microbiol., Messina-Taormina 1967, 269?277. Napoli: Di Blasio 1968.
5. Chiarini, A., Norrby, E.: Separation and characterization of products of two measles virus variants. Arch. ges. Virusforsch.29, 205?214 (1970).