Original source may be found at http://octave.sf.net.

Files: inst/Si.m:1, inst/expint.m, inst/zeta.m, inst/heaviside.m,
 inst/expint_E1.m, inst/Ci.m inst/expint_Ei.m, inst/psi.m,
 inst/sinint.m, inst/cosint.m, inst/erfcx.m, inst/dirac.m,
 inst/erfcinv.m
Copyright: © 2006 Sylvain Pelissier
License: GPL-2+
 These *.m files are under the GPL, version 2 or later.

Files: inst/lambertw.m
Copyright: © 1998 Nicol N. Schraudolph
License: GPL-2+
 This file is under the GPL, version 2 or later.

Files: src/ellipj.cc
Copyright: © 2001 Leopoldo Cerbaro
License: GPL-2+
 This file is under the GPL, version 2 or later.

Files: inst/ellipj.m, inst/ellipke.m
Copyright: © 2001 David Billinghurst
License: GPL-2+
 These *.m files are under the GPL, version 2 or later.

Files: debian/*
Copyright: © 2008 Ólafur Jens Sigurðsson <ojsbug@gmail.com>
License: GPL-3+
 The Debian packaging information is under the GPL, version 3 or later.

On Debian systems, the complete text of the GNU General Public License,
version 2, can be found in the file `/usr/share/common-licenses/GPL-2. The
complete text of the GNU General Public License, version 3, can be found
in the file `/usr/share/common-licenses/GPL-3.
