CREDITS.txt

Credits
=======

natu_ was written by `Kevin Davies`_.  Some aspects of the project were inspired
by or copied from these packages:

- `Pint <http://pint.readthedocs.org/>`_ (`BSD license
  <https://raw.githubusercontent.com/hgrecco/pint/master/LICENSE>`_):

  - Copied and modified some of the functions for string formatting
  - Used the idea of unit definition files
  - Copied some of the unit definitions

- `SciMath <http://scimath.readthedocs.org/en/latest/units/intro.html>`_ (`BSD
  license
  <https://raw.githubusercontent.com/enthought/scimath/master/LICENSE.txt>`_):

  - Adapted the approach for tracking dimensions
  - Copied some of the unit definitions

The logo was copied and modified from `an image of the electron shell transitions
of hydrogen <http://en.wikipedia.org/wiki/File:Hydrogen_transitions.svg>`_ by
`Szdori <http://commons.wikimedia.org/w/index.php?title=User:Szdori>`_ (Mar. 19
2009).

:func:`natu.util.list_packages` is based on `unutbu
<http://stackoverflow.com/users/190597/unutbu>`_'s `post on Stack Overflow
<http://stackoverflow.com/questions/1707709>`_ (Nov. 10 2009).

If you use natu_ or concepts from it in shared work, please cite the following:

   K. Davies and C. Paredis, "`Natural Unit Representation in
   Modelica <http://www.ep.liu.se/ecp_article/index.en.aspx?issue=076;article=082>`_,"
   in Modelica Conference (Munich, Germany), Modelica Assoc.,
   Sep. 2012.


.. _natu: index.html
.. _Kevin Davies: http://www.hnei.hawaii.edu/staff/kevin-davies