Request for references on use of computer algebra

I am preparing a review article on applications of computer algebra in gravity research.

To list all papers where computer algebra was used would be impractical, but I would like my selected examples to include reasonably recent papers covering a wide area. So please send information on any unusual applications, or extensive uses in traditional applications. Email to m.a.h.maccallum[AT]qmul.ac.uk, please.

Malcolm A. H. MacCallum