TY - RPRT TI - Gas-Granular Simulation Framework for Spacecraft Landing Plume-Surface Interaction and Debris Transport Analysis AU - Liever, Peter A. AU - Gale, Manuel P. AU - Mehta, Ranjan S. AU - West, Jeffrey S. PY - 2018 UR - https://ntrs.nasa.gov/citations/20180004175 ID - 20180004175 ER -