As you have stated
"We are thinking to create an "APPEARED IN" section in our home page, linking back to all those places. The links will be NOFOLLOW."
Since the links will be "No-follow" Google will know they are not for link manipulation. There is no harm in doing the links.
As for placement, maybe the homepage is a good place, maybe an inner page will be better or better yet, do the home page addition like you're wanting and add a link to an inner page that expounds on said topic matter.
That last suggestion could provide some additional help in ranking.. test it..