2585 20160701171707.0 10.1051/eas:0831050 DOI ASTROimport-742 van Hoof, P. A. M. 2008 Modeling X-ray Ionization of Grains with Cloudy In this paper we discuss our recent efforts to update the X-ray treatment of grains in the PDR modeling code Cloudy. Abel, N. P. Williams, R. J. R. Porter, R. EAS Publications Series 31 2008 213-214 http://esoads.eso.org/abs/2008EAS....31..213V published in NONREF