NOTICE

Paper(s) from which source code implementation is derived:
  I. J. Zucker, "92.34 The cubic equation – a new look at the irreducible case",
  The Mathematical Gazette, July 2008, Vol. 92, No. 524 (July 2008), pp. 264-268
  Published by: The Mathematical Association
  Stable URL: https://www.jstor.org/stable/27821778

  William M. Faucette, "A Geometric Interpretation of the Solution of the General Quartic Polynomial"
  The American Mathematical Monthly, Jan. 1996, Vol. 103, No. 1 (Jan., 1996), pp. 51-57
  Published by: Taylor & Francis, Ltd. on behalf of the Mathematical Association of America
  Stable URL: https://www.jstor.org/stable/2975214

The authors release the source code derived from the Paper
under terms of the MIT License or any later version.
See also file LICENSE attached to the software package.

A custom in the scientific comunity is (regardless of the licence
you chose to use or distribute this software under)
that if this code was important in the scientific process or
for the results of your scientific work, we kindly ask you for the
appropriate citation of the Paper (Zucker 2008), and
we would be greatful if you pass the information about
the proper citation to anyone whom you redistribute this software to.