The naming conventions and typology of ancient helmets are largely of modern origin and do not reflect contemporary usage (Connolly 1998, p. 60: "Terms such as 'Illyrian' and 'Attic' are used in archaeology for convenience to denote a particular type of helmet and do not imply its origin.") Connolly, Peter (1998). Greece and Rome at War. London: Greenhill Books. ISBN185367303X.