[% SET authors = entry.authors -%]
[%- IF authors.size -%]
 <p>By
  [% FOR author = authors -%]
   <span class="author vcard"><span class="fn">[% IF author.homepage
    %]<a href="[% author.homepage |html %]">[% author.name || author.username |encode |html %]</a>[% ELSE
    %][% author.name || author.username |encode |html %][% END
   %]</span></span>[% IF !loop.last %],[% END %]
  [% END -%]
 </p>
[% END -%]