1 1 http://journals.giga-hamburg.de/index.php/jpla/login 1 1 . 2 2 http://www.bingiton.com/proxy.aspx 2 2 http://www.ub.uni-koeln.de/IPS 3 3 1 1 0 20120930130043 200.18.49.14 4 4 0 20120912234834 78.151.85.130 1 1 0 1 1 0 20120926060432 208.43.111.122 1 1 0 20120926222714 83.229.28.234 3 3 0 .