TY - RPRT TI - Imagining physically impossible self-rotations: geometry is more important than gravity. AU - S H Creem AU - M Wraga AU - D R Proffitt PY - 2001 DO - 10.1016/s0010-0277(01)00118-4 UR - https://pubmed.ncbi.nlm.nih.gov/11525481/ ID - 11525481 ER -