[texhax] Collections

[Michael Barr]

I have been asked to help out a group of editors who are attempting to put 
together a festschrift and are running into problems because various 
things in the paper clash with each other.  Some of the problems are easy 
to solve.  An error message that \newtheorem{lem}{Lemma} is multiply 
defined can be fixed by either deleting it or simply preceding it with 
\let\lem\relax.  Much more serious are multiply defined labels and bib 
entries.  Have these problems been solved?  I did search ctan for 
"collections", but found nothing helpful. 

Michael Barr