Chadic Languages [resource request]

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Anybody here familiar with the literature on Chadic languages, especially with regards to diachronics/historical phonology? I'd appreciate some texts that are overviews or are otherwise foundational, important, etc.

[Chengjiang]

I'd also be very interested in this.

[Vijay]

I'm not familiar with it, so idk whether this is going to help at all, but I happen to have a copy of The World's Major Languages, which does seem to mention a few. It says "the standard work on Chadic classification and the reconstruction of Proto-Chadic" is this:

Newman, P. 1977. Chadic Classification and Reconstructions (Undena, Malibu, Calif.)

It also says that this "treats Chadic vocabulary from a comparative perspective":

Jungraithmayr, Hermann and Kiyoshi Shimizu. 1981. Chadic Lexical Roots. II. Tentative Reconstruction, Grading and Distribution (Marburger Studien zur Afrika- und Asienkunde, A-26, Deitrich Reimer, Berlin)

And that this "is an attempt to establish definitively the membership of Chadic within Afroasiatic":

Newman, P. 1980. The Classification of Chadic Within Afroasiatic (Universitaire Pers, Leiden)

Everything else it mentions is Hausa-specific, so I'm not sure whether that's of interest to y'all, too.

[Cedh]

Gravina, R. 2014: The phonology of Proto-Central Chadic (PhD dissertation, University of Leiden)