+CTSim is covered by the GNU GPL stated below. Additionally, the Herman
+Phantom defined in libctsim/phantom.cpp is copyright by Gabor
+T. Herman, Ph.D. Dr. Herman has granted permission for use of the his
+phantom in CTSim and derivative software products. However, any print
+or web publication of his phantom requries his explicit approval.
+
+
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991