• Butler J, Sorell T., (2022) Does Libertarianism Provide a Justification for Vaccine Hesitancy? The Political Quarterly 93(2):342-346. https://doi.org.10.1111/1467-923X.13136
• Sorell, T. and Butler, J., (2022) "The Politics of Covid Vaccine Hesitancy and Opposition" The Political Quarterly 93:347-351. https://doi.org/10.1111/1467-923X.13134