TY - RPRT TI - Mechanical properties of simulated Mars materials: gypsum-rich sandstones and lapilli tuff AU - Carolyn Morrow AU - David Lockner AU - Chris Okubo PY - 2013 DO - 10.3133/ofr20131242 UR - https://pubs.usgs.gov/publication/ofr20131242 ID - ofr20131242 ER -