TY  - RPRT
TI  - Shape from shading in different frames of reference.
AU  - I P Howard
AU  - S S Bergström
AU  - M Ohmi
PY  - 1990
DO  - 10.1068/p190523
UR  - https://pubmed.ncbi.nlm.nih.gov/2096370/
ID  - 2096370
ER  -