J. Andy Spry

NASA's path to planetary protection requirements for human exploration missions: Update on recent progress

James E. Johnson, J. Andy Spry, Margaret S. Race, 2016, 2016 IEEE Aerospace Conference.

Updating Planetary Protection Considerations and Policies for Mars Sample Return

J. Andy Spry, Catharine A. Conley, Bergit Uhran, 2019 .

Planetary Protection Knowledge Gaps for Future Mars Human Missions: Stepwise Progress in Identifying and Integrating Science and Technology Needs

J. Andy Spry, Margaret S. Race, Bette Siegel, 2018 .

Unanswered questions in the development of planetary protection policy and implementation for the human exploration of Mars

J. Andy Spry, Margaret Race, John Rummel, 2016, 2016 IEEE Aerospace Conference.

The International Planetary Protection Handbook (IPPH)

Elke Rabbow, Petra Rettberg, J. Andy Spry, 2018 .

Planetary protection for human missions to Mars: A forward look

J. Andy Spry, Bette Siegel, Margaret S. Race, 2018 .

Planetary Protection Concepts in the Context of the Evolvable Mars Campaign

J. Andy Spry, Margaret S. Race, Bette Siegel, 2015 .