What has the author Charles Gos written?

It appears you're asking about an author named Charles Gos. However, there is no widely recognized author with that name. It's possible there's a typo or an uncommon name.

Could you please double-check the spelling or provide any additional context about the author you are looking for?

For example:

* Is there a specific book or genre you're interested in?

* Do you remember any other information about the author, like their nationality or the time period they wrote in?

With more information, I might be able to help you find the author you are looking for.