Dear Rett,

> Thanks for the reference.

Not at all !

> This is an area i didn't even know existed just a few weeks ago.

One reason why it is important is because it can be used to correct textual
corruptions.

> Does the following sound right? Allon, Mark [snip]

Yes, that's the one. Actually, I have just found my copy. The ISBN is
4-906267-40-8.
You can order it from http://www.icabs.ac.jp/IcabsE/publication/
Their books are quite reasonably priced and you may find other titles of
interest.

Best wishes,
Stephen Hodge