Bibliography issues

[Rich Shepard]

On Wed, 7 Jun 2023, Herbert Voss wrote:

> Export your document to latex, then run pdflatex/bibtex/pdflatex on this
> document and search for the deprecated commands in the .tex and .bbl file.
> If they are in the .bbl file then your problem is an old bibtex stylefile
> (.bst). If they are in the .tex file then your document itself or one of
> the used packages must have these commands defined.

Herbert,

Thanks for the detailed explanation. I've got my work cut out for me as
pdflatex fails with an error:
! LaTeX Error: Command \chead already defined.
                Or name \end... illegal, see p.192 of the manual.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
  ...

l.1551 ...nel at ifstar {\@dblarg\@@@chead}{\@chead}}
                                                   %
?

I'll look in my copy of 'The LaTeX Companion, 2nd Ed.' and see if I can find
that error.

Regards,

Rich