Here's another list of recommended reading while I'm away. It was compiled by Guillaume Jacques, whose works taught me almost everything I know about rGyalrong (which is to say very little - mea culpa for not reading enough).

I would add these 1979 Linguistics of the Tibeto-Burman Area articles by Nagano Yasuhiko, who edited the online rGyalrongic languages database along with Marielle Prins:

A historical study of rGyarong initials and prefixes. 4.2: 44-68.

A historical study of rGyarong rhymes. 5.1: 37-47.

I haven't seen those articles since 2008. It would be interesting to compare his views of rGyalrong phonological history with Guillaume's.

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