TY  - RPRT
TI  - Imagining physically impossible self-rotations: geometry is more important than gravity
AU  - Creem, S. H.
AU  - Wraga, M.
AU  - Proffitt, D. R.
AU  - Kaiser, M. K.
PY  - 2001
UR  - https://ntrs.nasa.gov/citations/20040112306
ID  - 20040112306
ER  -