How to cite within a reference entry using biblatex

Question

In my bibliography I have a reference to a talk and another reference to the cartoons rendering of the concepts covered in the first talk.

My solution is to cite both entries in the text and to put a reference in the addendum field of the cartoons rendering:

@ONLINE{Pink2010,
    author = {Daniel Pink},
    title = {Drive: The surprising truth about what motivates us},
    url = {http://comment.rsablogs.org.uk/2010/04/08/rsa-animate-drive/},
    addendum = {Versione cartoon di \cite{Pink2010a}}
}

@ONLINE{Pink2010a,
    author = {Daniel Pink},
    title = {Drive},
    url = {http://www.thersa.org/events/vision/vision-videos/dan-pink-drive}
}

Is this the correct way to enter these references?

Answer 1

Actually, that depends on the standards you're following. But it makes more sense to me if the second version (the "cartoon") pointed to the first through crossref field. So you should have

@Online{Main-ref,
author = {Author},
Title = {Title},
url = {url}
}

and

@online{Secondary-ref,
crossref = {Main-ref},
url = {new url},
addendum = {Explanation of the difference between the versions}
}