1. Performance evaluation of wheels for lunar vehicles;Freitag,1970
2. Performance evaluation of wheels for lunar vehicles (Summary Report);Freitag,1970
3. Performance of two Boeing-GM wheels (GM VII and VIII) for the manned lunar roving vehicle;Green,1971
4. Performance of Boeing-GM wheels in a lunar soil simulant (Basalt);Green,1970
5. Trafficability of soils; tests on coarse-grained soils with self-propelled and towed vehicles, 1958–1961;Rush,1963