Ostapirat, Weera. 2000. Proto-Kra. Linguistics of the Tibeto-Burman Area 23. 1-251.
@article{jacquesestimative-ostapirat00kra,
author = {Ostapirat, Weera},
journal = {Linguistics of the Tibeto-Burman Area},
number = {1},
pages = {1-251},
title = {Proto-Kra},
volume = {23},
year = {2000}
}