correct XPATH syntax

[Twomey, David]

Is this possible in DataImportHandler

I want the following XML to all collapse into one Author field

<AuthorList CompleteYN="Y">
 <Author ValidYN="Y">
  <LastName>Sørlie</LastName>
  <ForeName>T</ForeName>
  <Initials>T</Initials>
 </Author>
 <Author ValidYN="Y">
  <LastName>Perou</LastName>
  <ForeName>C M</ForeName>
  <Initials>CM</Initials>
 </Author>
 <Author ValidYN="Y">
  <LastName>Tibshirani</LastName>
  <ForeName>R</ForeName>
  <Initials>R</Initials>
 </Author>
...

So my XPATH is like