P. Chandra

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.
A notice gets attached at the bottom of feed articles like this 
Original Article: Title of Article (linked to permalink) 
Copyright Year. Blog Title (linked). All Rights Reserved
Your Blog title is linked to your blog Url. Your article title is linked to the article permalink.
Blog copyright notices are important as your feed gets freely distributed across the web and is republished without permission by RSS scrappers and autoblogs. After using this plugin, now RSS scrappers will link back to your site, which will suggest to search engines that your blog and article was the original source.

Simple Feed Copyright

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.

duncanjbrown

After activating this plugin you’ll find information resembling the following in the head of any Atom feed with multiple pages:

And depending on your position in the feed, you may find the following too:

For more details see the <a href="https://tools.ietf.org/html/rfc5023" rel="nofollow ugc">Atom spec</a>

Paginate Atom Feeds

This plugin adds link rel="next" and lin rel="prev" to the head of your atom feed.

Simple Feed Copyright vs Paginate Atom Feeds