Hello again,
I've noticed that file /components/com_content/views/article/tmpl/default.php in Joomla 3.3.1 is very different from 3.2.x version.
New version includes microdata in author displaying. I check source code of the pages rendered and noticed that author name is there.
Here is the code I see:
<dd class="createdby" itemprop="author" itemscope itemtype="http://schema.org/Person"> Escrito por <span itemprop="name">El Equipo de Redacci?n</span></dd>
As you can see, author name is enclosed into a span tag with an 'itemprop' attribute value 'name'.
This is exactly what the template does not show.
I've tried several CSS tricks, but I can't get the author name in pages.
Temporarily, I switched back to the old /components/com_content/views/article/tmpl/default.php file, but sooner or later I'll have to restore the 3.3.1 version.
Thanks in advance for your help.
Luis