Yes, Citavi works together with LaTeX. You can use the Citavi Publication Assistant to insert citations and quotations directly into a document if you use one of the following TeX editors:
Citavi can scan the TeX document for BibTeX keys and create a BibTeX document with the citations.

If you use LyX, you can set up a Named Pipe to insert citations directly in the LyX format. Please refer to this guide for the setup of LyX and Citavi. (PDF, 1.2 MB)

For more information on Citavi and LaTeX, refer to the chapter "Creating a Publication with LaTeX" in the Citavi manual.