TY  - RPRT
TI  - A 3-dimensional digitizer using spherical co-ordinates.
AU  - D Thomas
PY  - 1988
DO  - 10.1111/j.1834-7819.1988.tb00656.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3165627/
ID  - 3165627
ER  -