Would it be possible, under Author*, to add a new field titled "Contributor*"? A new field where the same functionality of the Author field is available but a field where the Author can add one or more users/email addresses as contributors, even though they aren't the actual author of the article. This way they are notified that an article has been added on their behalf and that the author believes they contributed to.
This would be very beneficial to us as a lot of our changes are collaborative based on the requests of our users.
Customer support service by UserEcho