</screen>
</section>
+<section>
+ <title>kdtree.c + kdtree.h - 0.5.6</title>
+ <para>Source: <ulink url="https://code.google.com/p/kdtree/"></ulink></para>
+ <para> Available under license:</para>
+<screen>
+Copyright (C) 2007-2011 John Tsiombikas <email>nuclear@member.fsf.org</email>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+OF SUCH DAMAGE.
+</screen>
+</section>
+
+<section>
+ <title>Data: cities15000.txt</title>
+ <para>Source: <ulink url="http://download.geonames.org/export/dump/"></ulink></para>
+ <para>This is used in a lookup of positions to timezones.</para>
+ <para>Unneccesary fields in the dataset (for Viking) have been removed and the resultant file is <filename>data/latlontz.txt</filename></para>
+ <para> Available under license:</para>
+<screen>
+This work is licensed under a Creative Commons Attribution 3.0 License,
+see <ulink url="http://creativecommons.org/licenses/by/3.0/"></ulink>
+The Data is provided "as is" without warranty or any representation of accuracy, timeliness or completeness.</screen>
+</section>
+
</section>