TY  - RPRT
TI  - Appendix: Results obtained to date
AU  - Walsh, Joanne L.
AU  - Chattopadhyay, Aditi
AU  - Pritchard, Jocelyn I.
AU  - Nixon, Mark W.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19900003272
ID  - 19900003272
ER  -