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.