libctl was written by Steven G. Johnson (stevenj@alum.mit.edu) with contributions by:

M.T. Homer Reid
Christopher Hogan
Ardavan Oskooi

The multidimensional integration routines in src/integrator.c were adapted
from the HIntlib Library by Rudolf Schuerer and from the GNU Scientific
Library (GSL) by Brian Gough; both of these libraries are licensed under
the GNU General Public License, version 2 or later.
