Book Interchange Tag Set: JATS Extension
Version 2.1 DTD
The DTD is the format from which all other schemas are derived. It is the only schema that is intended for maintenance.
Getting the Files
The DTD files are available on the anonymous FTP: https://public.nlm.nih.gov/projects/jats/extensions/bits/2.1/.
The schema is also available at the following stable URL: https://jats.nlm.nih.gov/extensions/bits/2.1/BITS-book2-1.dtd
Schema Structure
The main module of the DTD is BITS-book21.dtd. It imports the subordinate modules. For the schema to work, all modules must be in the same directory.