Looping reference

I have two Java classes: Article and Author

The Article class has a list of its authors.
The Author class has a list of its written articles.

I’m trying to return this data to the client side using DSResponse.setData.
I’m receving this message:

WARN JSTranslater - br.univali.sapi.modelo.Author contains a (potentially indirect) looping reference to itself. Returning null for recursed value.

This message repeats several times until i get a top-level server error.

I need to keep this circular reference because it is a system requirement.
How can I solve this problem?

For any server-side problem, always post the complete server log for the request.