Bats

Hi

I am trying to discover if there is a written form of Bats and if so
the script and model:

http://www.ethnologue.com/show_language.asp?code=bbl

Most sources state that there is no written form of the language but I
have found the following link:

http://titus.fkidg1.uni-frankfurt.de/texte/caucasica/batsbi/tatyar.htm

Assistance would be much appreciated

Best regards

Debbie Garside