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<section id="attrib">
<title>Attributions</title>
<para>
This document contains licenses and notices for open source software used in this product.
The source code used in this product is available on the project website <ulink url="http://viking.sf.net">http://viking.sf.net</ulink>
</para>

<section>
	<title>coords.c + coords.h</title>
	<para>Available under license:</para>
<screen>
** Copyright © 2001 by Jef Poskanzer <email>jef@acme.com</email>.
** All rights reserved.
**
** 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.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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>strtod.c</title>
	<para>Source: <ulink url="http://www.jbox.dk/sanos/"></ulink></para>
        <para>Version: Sanos 1.3.2</para>
	<para>Available under license:</para>
<screen>
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
//
// 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. Neither the name of the project nor the names of its contributors
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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>kdtree - 0.5.6</title>
        <para>A simple C library for working with KD-Trees.</para>
	<para>Source: <ulink url="https://github.com/jtsiomb/kdtree"></ulink></para>
	<para>Files used: <filename>kdtree.c + kdtree.h</filename></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>fpconv</title>
	<para>Converts floating point numbers to an optimal decimal string representation without loss of precision.</para>
	<para>Source: <ulink url="https://github.com/night-shift/fpconv"></ulink></para>
	<para>Available under <ulink url="https://opensource.org/licenses/MIT">MIT license</ulink></para>
	<para>Files used: <filename>fpconv.c + fpconv.h</filename></para>
	<para>Version SHA:dfeb7e938fb85fb5eca130b84f856705ced75012 (August 2013)</para>
</section>

<section>
	<title>GtkHTML 4.10.0</title>
	<para>An extract from GtkHTML for URI functions.</para>
	<para>Source: <ulink url="https://git.gnome.org/browse/gtkhtml"></ulink></para>
	<para>Available under <ulink url="https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html">GPL2</ulink> or later.</para>
	<para>Files used: <filename>gtkhtml.c + gtkhtml-private.h</filename></para>
</section>


<section>
	<title>libheatmap</title>
	<para>A heatmap generation library.</para>
	<para>Source: <ulink url="https://github.com/lucasb-eyer/libheatmap"></ulink></para>
	<para>Available under <ulink url="https://opensource.org/licenses/MIT">MIT license</ulink></para>
	<para>Files used: <filename>heatmap.c + heatmap.h</filename></para>
        <para>Version SHA:0e22cbdaf4b4790beca2313c329db2332f2609eb (Nov 2017)</para>
</section>

<section>
	<title>Data: cities15000.txt</title>
	<para>Source: <ulink url="https://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>
	<title>Data: Response to online request made in vikgoto.c</title>
	<para>Use of geoPlugin services making use of geolocation data is under condition of acceptance of the <ulink url="http://creativecommons.org/licenses/by-sa/3.0/">Creative Commons Attribution-ShareAlike 3.0 Unported License</ulink>.</para>
	<para>This product includes GeoLite data created by MaxMind, available from <ulink url="http://www.maxmind.com"></ulink>.</para>
</section>

<section>
	<title>Artwork: Icons</title>
	<para>Some icons have been used courtesy of <ulink url="https://uxwing.com"></ulink></para>
	<para>Available under <ulink url="https://opensource.org/licenses/MIT">MIT license</ulink></para>
</section>

</section>

