http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-18728 (Any fulltext)
clitication_schiering2006_s.pdf (Any fulltext), 2MB
Schiering, R. (2006). Cliticization and the evolution of morphology: a cross-linguistic study on phonology in grammaticalization. PhD Thesis, Univ., Konstanz.