The official peer-reviewed journal of ICOS, published annually.
The ICOS Newsletter is a short electronic update on the latest news from ICOS and is published on an ad hoc basis as the need arises.
A list of proceedings of the International Congress of Onomastic Sciences (1938–present).
See here for the work of the ICOS Bibliography Group.
See here for outputs from the ICOS Terminology Group, in the form of useful summaries of key terms in onomastics in various languages (lists are currently being prepared in more languages and will be available in due course).