His teaching has focused on introductory Thai syntax, but also more particularly on Siamese versification and classical works, from their origins to the seventeenth century.
He is the author of some fifty articles published in French, English and Thai, concerning issues of the dating and restoration of classical Siamese manuscripts, as well as work on the origins of the first embodiment of Siamese unity in the first part of the Ayudhya period (1350–1656).