The icons are mostly derived work from other icons. As such they are
licensed accordingly to the original license:

Project                 License                   File
----------------------------------------------------------------------------
GV (Gael Varoquaux)     Public Domain             N/A
OOo                     LGPL                      image_LICENSE_OOo.txt

Unless stated in this file, icons are the work of Enthought, and are
released under a 3 clause BSD license.

Files and original authors:
----------------------------------------------------------------------------
scimath/units/plugin/images:
                          error.png | GV
                       quantity.png | OOo
