To suit your other needs (posted in the reply to the previous message):

Make a hash of the full authors, with their literal name.
Code you can use for that (I would advice you search yourself first before looking at my solution)

If you've done that, then you can repalce the @full_authors in the grep method with keys %my_own_hash, and then you can remove all the elements that were found (or just the first one) from that hash using the delete-function.