citesidx – Produce a citation list for the bibliography

The list of ci­ta­tions may ap­pear as a list of page num­bers in each cited en­try in the bib­li­og­ra­phy, or in the in­dex.
A mod­ern im­ple­men­ta­tion of the same con­cept is back­ref (part of the hy­per­ref dis­tri­bu­tion), that pro­duces hy­per­text links from the bib­li­og­ra­phy to each ci­ta­tion.