<div dir="ltr">Dear Guillaume,<div><br></div><div>Although it may or may not address the questions you raised about the grammaticalization of conjugation marker/mode prefixes specifically, you might be interested in Marianne Mithun's recent chapter in the Oxford Handbook of Grammaticalization, which focuses on grammaticalization and Navajo verbal morphology:</div>
<div><br></div><div>Mithun, Marianne. 2011. "Grammaticalization and explanation." In Narrog, Heike and Bernd Heine (eds.), The Oxford Handbook of Grammaticalization, 177–192. Oxford: OUP.</div><div><br></div>Hope this helps, and look forward to hearing more about your research,<div>
<br></div><div>- Chris<br clear="all"><div><br></div>-- <br><div dir="ltr"><div>Christopher Cox</div><div>2-40 Assiniboia Hall, Department of Linguistics, University of Alberta</div><div>Edmonton, Alberta, Canada T6G 2E7</div>
<div><a href="mailto:christopher.cox@ualberta.ca" target="_blank">christopher.cox@ualberta.ca</a></div><div><a href="http://www.ualberta.ca/~cdcox/" target="_blank">http://www.ualberta.ca/~cdcox/</a></div></div></div></div>