Adding another source.F90 example from 2001See: Y. Chen, U. Fischer, and H. Tsige-Tamirat, .Rigorous MCNP Based Shutdown Dose Rate Calculations: Computational Scheme, Verification Calculations and Applications to ITER,. Forschungszentrum Karlsruhe & Institute of Plasma Physics of Chinese Academy of Sciences, Karlsruhe, Germany & Hefei, Anhui, P.R. China, IRS-Nr. 2/01 - FUSION Nr. 166, Jan. 2001.