TY  - RPRT
TI  - Building a Shared Definitional Model of Long Duration Human Spaceflight
AU  - Orr, M.
AU  - Whitmire, A.
AU  - Sandoval, L.
AU  - Leveton, L.
AU  - Arias, D.
PY  - 2011
UR  - https://ntrs.nasa.gov/citations/20110023088
ID  - 20110023088
ER  -