Download whole books from link.springer.com
Original Source (and therefore this derivation as well):
This program is free software; you can redistribute it and/or modify it under the terms of VERSION 2 of the GNU General Public License as published by the Free Software Foundation provided that the above copyright notice is included.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Go to http://www.gnu.org/licenses/gpl-2.0.html to get a copy of the license.