I have finally decided to start to improve on the simple, fully automatic recipes that Calibre generates. The first thing I would like to do is have the article include the name of the author of the article and the publication date after the title (or in some other logical location, for reference).
I believe this information is included in the feed data and in the page of the article itself. The feed in question is:
http://politikon.es/feed/
Many thanks for your help. Perhaps seeing how this is done will help me make heads or tails of the rest.