Starting off with one publication - an event composed out of a list of sections:

Take the full article, using the root kind 30040 event as an entry to a root event titled "Publications from our authors", which handles the aggregation and distribution of articles.

On the other hand, a person that wants to look back at what they've read can slot in other user publications, or sections like a collage into their own root kind 30040 titled "notes" that they can look back to. Which takes care of the collaborative use cases.