XPath Issues in XQuery

[David Carlisle]

>  I am wondering if offering information here on the actual hierarchy
>  of my data would help.
better to supply a small (10 line or so) complete input file.

The snippet you posted gives no indication about the location of ad or
head elements, no information about any namespaces in effect or any one
of 1000 possible sources of error.

> Another question is, would I have to make adjustments to the let
> clause for $volume, $issue ad $journal?

you could delete them, they are not doing anything as far as i can see.

David


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