for invitation in revision_invitations:
number = int((invitation.id.split('/-/')[0]).split('Paper')[1])
submission = submissions_by_number[number]
references = client.get_references(referent = submission.id, invitation = invitation.id)
revisions_by_forum[submission.forum] = references
print(f'no revisions for {number}')
print(f'Number of revision invitations: {len(revision_invitations)}')
print(f'Number of revisions submitted: {len(revisions_by_forum.keys())}')