Nyberg, M., Kulonen, K., Neuvonen, E., Ek-Kommonen, C., Nuorgam, M., & Westerling, B. (1992). An Epidemic of Sylvatic Rabies in Finland: Descriptive Epidemiology and Results of Oral Vaccination. Acta Vet Scand.

Nyberg, Matti, Katariina Kulonen, Erkki Neuvonen, Christine Ek-Kommonen, Marja Nuorgam, and Bengt Westerling. "An Epidemic of Sylvatic Rabies in Finland: Descriptive Epidemiology and Results of Oral Vaccination." Acta Vet Scand 1992.

Nyberg, Matti, et al. "An Epidemic of Sylvatic Rabies in Finland: Descriptive Epidemiology and Results of Oral Vaccination." Acta Vet Scand 1992.