1. Medical Virology;White,1994
2. Rates of spontaneous mutations among RNA viruses;Drake,1993
3. Mutation rates and rapid evolution of RNA viruses;Domingo,1994
4. The Hypercycle. A Principle of Natural Self-Organization;Eigen,1979
5. Genetic bottleneck and population passages cause profound fitness differences in RNA viruses;Clarke;J. Virol.,1993