@misc{indiciae960eb3d0e7b0, title = {Enabling Technologies and Mission Concepts for Exploring the Martian Subsurface}, author = {Ruffatto, D. and Stamenkovic, V. and Barba, N. and Edwards, C.}, year = {2021}, url = {https://ntrs.nasa.gov/citations/20220003437}, note = {Source identifier: 20220003437} }