~/entwicklung 51> perl arrayref.pl 
$VAR1 = {
          'eins' => [
                      '8',
                      '9'
                    ],
          'zwei' => $VAR1->{'eins'}
        };
$VAR1 = {
          '1' => [
                   1,
                   2
                 ],
          '3' => [
                   3,
                   4
                 ],
          '2' => [
                   2,
                   3
                 ]
        };