The code in

- src/polyroot.cpp

was adapted from third-party code to which the following applies:

- Copyright (C) 1997-1998 Ross Ihaka,
- Copyright (C) 1999-2001 R Core Team.


The code in

- src/sampler.cpp

was adapted from third-party code to which the following applies:

- Copyright (C)  2012 - 2014  Christian Gunning,
- Copyright (C)  2013  Romain Francois.