TY - JOUR AU - Peter Bender BT - Advances in Space Research DA - Jan-06-1994 DO - 10.1016/0273-1177(94)90033-7 PY - 1994 SP - 233 EP - 242 T2 - Advances in Space Research TI - Proposed microwave transponders for early lunar robotic landers VL - 14 SN - 02731177 ER -