In many instances of Gabonese media, "Teke" seems to be regarded as a single language, however there are several varieties that are distinct enough to be considered as separate languages. The most common varieties within Gabon are Teke-Tsaayi (sometimes referred to as West Teke which is actually a broader classification including a few other lesser-spoken varieties) and North Teke (often simply referred to as Tɛgɛ). Both of these are spoken mainly in the Haut-Ogooué province. However the vitality of Teke as a written language appears to be very low and I am unable to understand which variety forms the basis of written Teke in Gabon.
Where can I find an extensive report about the usage and vitality of Teke in southeastern Gabon and how can I understand which variety with the Teke dialect continuum is being used as the basis of the written language in rural education and other forms of local media?
