Josef Fruehwald (2013)
In this chapter, I first disscuss the relationship between sound change and grammar, specifically how your theory of speakers' knowledge of their sound systems defines and circumscribes possible sound changes. I then lay out my minimal theoretical committments, and discuss my proposal that phonetic change ought to be understood as changing phonetic implementation. I compare quantitative predition of my proposal against a competing proposal that all sound change is phonological.
This is my favorite figure from this chapter, which outlines the quantitative prediction of what phonetic change would look like if it was actually phonological.