TY  - RPRT
TI  - Physical objects as bidirectional user interface elements.
AU  - Dan Rosenfeld
AU  - Michael Zawadzki
AU  - Jeremi Sudol
AU  - Ken Perlin
DO  - 10.1109/mcg.2004.1255808
UR  - https://pubmed.ncbi.nlm.nih.gov/15384667/
ID  - 15384667
ER  -