Suppose I have a two (or, in fact, an arbitrary number of) bibtex entries as follows:
@inproceeding{one,author = {Paul Elk}, title = {Moo}, series = {The Original Oak Likes Our Natural Ginseng}, ...}
@inproceeding{one,author = {Darma Shian}, title = {Waf}, series = {The Original Oak Likes Our Natural Ginseng}, ...}
As you may guess, the series name takes a lot of room in the references section.
I know there is a way (but I can't find it any more) to have latex/bibtex work so that the end result looks like:
[1] Paul Elk. Moo. In ..., volume 1 of The Original Oak Likes Our Natural Ginseng (henceforth 'TOOLONG'), 1942.
[2] Darma Shian, Waf, In ..., volume 2 of TOOLONG, 1955.
Ideally, that would work for any number of entries, whatever order they appear in. It is ok for me to choose the acronym, no need to infer it computationally.