Other novels in Godfather universe

Hi there.

I really enjoyed the Godfather novel.

I just wonder if there are novels which continue the story, meaning that they include characters from the original novel.

Does anybody know some?

Ciao
Vito

THE SICILIAN has an extremely brief GODFATHER sub-plot, but it's really a completely separate story and not a continuation of GF.

But you'll probably like it if you enjoyed THE GODFATHER.