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

Files: inst/splot.m, src/differentiate.cc, src/ov-ex.cc, src/symbols.cc,
 src/op-vpa.cc, src/sym-ops.h, src/sym-create.cc, src/ov-relational.cc,
 src/ov-ex-mat.cc, src/ov-ex.h, src/op-ex-mat.cc, src/op-ex.cc,
 src/sym-bool.cc, src/ov-ex-mat.h, src/ov-vpa.h, src/ov-relational.h,
 src/ov-vpa.cc
Copyright: © 2002 Ben Sapp
License: GPL-2+
 These files are under the GPL, version 2 or later.

Files: inst/findsym.m, inst/poly2sym.m, inst/sym2poly.m, inst/symfsolve.m,
 src/findsymbols.cc, src/syminfo.cc, src/numden.cc, src/symlsolve.cc,
 src/sumterms.cc
Copyright: © 2003 Willem J. Atsma
License: GPL-2+
 These files are under the GPL, version 2 or later.

Files: src/probably_prime.cc
Copyright: © 2001 Paul Kienzle
License: GPL-2+
 This file is 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.
