Find all references in a project including all children

Hello,

I need to find all projects references in a VSLangProj project.

I have a Wpf application project for example with several class library projects referenced. Those libraries can reference others class library projects ad so on. I want to get not only those library projects, but all children class library related to my Wpf application.

I only need referenced class library projects in the solution and not the dll libraries.

Thanks in advance for your help.