How to group related references together in order to show as a single entry in the bibliography?

by user1620696   Last Updated October 10, 2019 02:23 AM - source

I have seem in some papers the approach of grouping related references together in the bibliography. This happens for instance in this paper, references [5] and [6]. For the benefit of the reader, one image from what I mean:

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The question is: how is this achieved with biblatex?

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