[Koha] authors

[Samo Se]

Hello
 
Is there another way to get additional authors into the basket ,  without this method
 
<!-- TMPL_LOOP NAME="MARCAUTHORS" -->
        <!-- TMPL_LOOP NAME="MARCAUTHOR_SUBFIELDS_LOOP" --><TMPL_VAR NAME="separator" --><!-- TMPL_VAR NAME="value" --></a><!-- /TMPL_LOOP --> 
        <!-- TMPL_UNLESS NAME="__last__" -->|
        <!-- /TMPL_UNLESS -->
        <!-- /TMPL_LOOP -->

  . I want to get a sub-field of the author only and do not want the other subfields
I want to get the value in the sub-field (a)
any help??
 		 	   		  
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