The authors (or people who mostly developed the code) are specified inside each
file which compose the PPSi source.

Where no otherways specified, the authors are:

Alessandro Rubini for CERN, 2011 -- GNU LGPL v2.1 or later
Aurelio Colosimo for CERN, 2011 -- GNU LGPL v2.1 or later

The whiterabbit extension is based on wrspec-pc/ptpnoposix project, internally
developed by CERN.

Many source files (mostly those regarding the algorithm itself) are based on the
PTPd project, v.2.1.0 (see http://ptpd.sourceforge.net/), with was used
according to the following copyright notice:

--- COPYRIGHT of PTPd v. 2.1.0 ---

The following copyright notice applies to all files which compose the
PTPd. This notice applies as if the text was explicitly included each
file.

Copyright (c) 2009-2010 George V. Neville-Neil, Steven Kreuzer,
                        Gael Mace, Alexandre Van Kempen
Copyright (c) 2005-2008 Kendall Correll, Aidan Williams


Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

---