Schrijver Peter. Studies in the History of Celtic Pronouns and Particles

Maynooth : Dept. of Old Irish, National University of Ireland, 1997.Foreword (1f.)
The Reflexes of Proto-Indo-European *so, *to- in Celtic, and Notes on *sio-, *sım (9–50).
The Reflexes of Proto-Indo-European *e/i- in Celtic (51–70).
The Reflexes of Proto-Indo-European *swe- in Celtic (71–90).
Notes on Relative Marking in Old Irish, with Special Reference to Relative Clauses with Object Antecedent (91–129).
Function and Meaning of *de (131–46).
The Particle *et(i) – The Old Irish Absolute and Conjunct Verbal Endings and the ‘Particle Theory’: A Discussion of the Objections (147–58).
Notes on British Particle Syntax (159–76).
Notes on Gaulish Particle Syntax (177–82).