Dickinson AG, Outram GW (1988). "Genetic Aspects of Unconventional Virus Infections: The Basis of the Virino Hypothesis". Ciba Foundation Symposium 135 - Novel Infectious Agents and the Central Nervous System. Novartis Foundation Symposia. Vol. 135. pp. 63–83. doi:10.1002/9780470513613.ch5. ISBN9780470513613. PMID3044709. {{cite book}}: |journal= ignored (help)
Dickinson AG, Outram GW (1988). "Genetic Aspects of Unconventional Virus Infections: The Basis of the Virino Hypothesis". Ciba Foundation Symposium 135 - Novel Infectious Agents and the Central Nervous System. Novartis Foundation Symposia. Vol. 135. pp. 63–83. doi:10.1002/9780470513613.ch5. ISBN9780470513613. PMID3044709. {{cite book}}: |journal= ignored (help)