Ronan, Patricia (2006) Aspects of Verbal Noun Constructions in Medieval Irish and Welsh With Reference to Similar Constructions in Basque. PhD thesis, National University of Ireland Maynooth.

Stifter, David (2008) Old Celtic Languages Sommersemester 2008: Addenda. Universität Wien .

Stifter, David (2008) Old Celtic Languages: Gaulish. General Information. Universität Wien , Germany.

Stifter, David (2011) Review: Graham R. Isaac, Studies in Celtic Sound Changes and their Chronology. Innsbrucker Beiträge zur Sprachwissenschaft Band 127, Innsbruck: Institut für Sprachen und Literaturen der Universität Innsbruck 2007. 128 pp. ISBN 978-3-85124-711-4. In Press .

Stifter, David (2010) The Invisible Third. The Basque and Celtic Words for "Swallow". Eriu, 60 . pp. 145-157. ISSN 0332-0758

Ni Bhrolchain, Muireann (2009) Who was Gormlaith's mother? A detective story. In: Lost and Found II - Rediscovering Ireland's past. Wordwell Ltd., Ireland, pp. 83-94. ISBN 978-1-905569-26-7