Corrections

[Gerry Wolff]

Re the two references that I sent yesterday, they should be:

J.UCS 5(11), 777-815, 1999 and J.UCS 5(7), 418-462, 1999.

Apologies for the errors. The URLs for these papers which I sent are
both correct.

Gerry

-- 
Dr J G Wolff, School of Informatics,
University of Wales, Dean Street, 
Bangor, Gwynedd, LL57 1UT, UK. 
Tel: +44 1248 382691. Fax: +44 1248 361429.
E-mail: gerry at sees.bangor.ac.uk
Web: http://www.sees.bangor.ac.uk/~gerry/