See in which file a dwg is inserted as xref?

Hello,

Is it possible to see in which files a dwg is inserted in as an xref? In a project I'm working om, there is a lot of 'junk-dwg's'. I must clean up the project-folder, but ofcourse, I don't want to mess up the drawings with xrefs in it that are used. So, if i can see which dwg's are used as xref, I can clean up a lot of unneccesary dwg's in the xref-folder.

Thanks!

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