Error message

• Strict warning: Only variables should be passed by reference in include() (line 37 of /var/www/sites/idsi/ibn2014/trunk/sites/all/themes/theme_ibn/page.tpl.php).
• Strict warning: Only variables should be passed by reference in authors_view() (line 2715 of /var/www/sites/idsi/ibn2014/trunk/sites/all/modules/Graph_Statistics/Graph_Statistics.module).