#!/usr/bin/perl

use SOAP::Lite;# +trace => qw(debug);

my $service = SOAP::Lite->service('http://hal.archives-ouvertes.fr/ws/ref.php?wsdl');

my $result = $service->getRefInstance();

use Data::Dumper;
print Dumper($result);

print $result->result,"\n";

##</code><code>##

$VAR1 = {
          'string' => [
                      'ads',
                      'afssa',
                      # [...] values cut for clarity
                      'telearn',
                      'tematice'
                    ]
        };
Can't call method "result" on unblessed reference at ./test.pl line 12.