| Bosnia on the border? republican violence in Northern Ireland during the 1920s and 1970s | Lewis, Matthew ; McDaid, Shaun | Article in Journal | | 2017 |
| Frank Aiken's war: the Irish revolution, 1916-23 | Lewis, Matthew | Monograph or Collective Volume | University College Dublin Press | 2014 |
| Sectarianism and Irish Republican violence on the south-east Ulster frontier, 1919–1922 | Lewis, Matthew | Article in Journal | | 2017 |
| The Newry Brigade and the War of Independence in Armagh and South Down, 1919-1921 | Lewis, Matthew | Article in Journal | | 2010 |