@misc{indiciae45a4b2df7632, title = {Champollion/Deep Space 4: A Comet Lander and Sample Return Technology Demonstration Mission}, author = {Grimes, J. M. and Muirhead, B. K. and Kerridge, S. J. and Weissman, P. R. and Green, J. R.}, year = {1997}, url = {https://ntrs.nasa.gov/citations/20060035343}, note = {Source identifier: 20060035343} }