TY  - RPRT
TI  - Light source dependence in shape from shading.
AU  - C G Christou
AU  - J J Koenderink
PY  - 1997
DO  - 10.1016/s0042-6989(96)00282-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9205707/
ID  - 9205707
ER  -