Copyright for tree-puzzle source package in Trusty

This package was debianized by  -- Andreas Tille  on
Mon,  5 Nov 2001 11:00:04 +0100

It was downloaded from http://www.tree-puzzle.de

Upstream Authors: Korbinian Strimmer  
   and Arndt von Haeseler .   

Copyright 1995-1999 by Korbinian Strimmer and Arndt von Haeseler
Copyright 1999-2003 by Heiko A. Schmidt, Korbinian Strimmer, Martin Vingron, and Arndt von Haeseler
Copyright 2003-2004 by Heiko A. Schmidt, Korbinian Strimmer, and Arndt von Haeseler

License:
  You are free to distribute this software under the terms of
  the GNU General Public Licence.
  On Debian systems, the complete text of the GNU General Public
  Licence can be found in /usr/share/common-licenses/GPL file.


A small warning: some files are derived from a work (the book "Numerical 
recipes") for which the authors do not hold the copyright. It does not 
harm:

Date: Mon, 17 May 1999 13:08:31 +0200 (MET DST)
From: Korbinian Strimmer 
To: Stephane Bortzmeyer 
Cc: Arndt von Haeseler 
Subject: License

[...]

However:

> >The whole package
> >   is licenced under the GNU public licence, except for the parts
> >   indicated in the sources where the copyright of the authors does not
> >   apply.
>
> Grepping through the source code, I find no place where there is a
> copyright other than yours. Do you have the name of the other authors
> so we can reach them and try to see if they agree with a GPL
> distribution?

This means that parts of the sources originally derive from
Numerical Recipes (indicated in the sources).  However, I think
that the code is suffiently modified as not be be generic
NR code.  In addition, we are not making money with the program,
so probably the whole source can be considered GPL.  On the
other hand, I have not asked NR and I am not a lawyer.  For that
reason the GPL licence covers only part of the sources.


 Korbinian