TY  - RPRT
TI  - Stereoscopic depth but not shape perception from second-order stimuli.
AU  - L R Ziegler
AU  - R F Hess
PY  - 1999
DO  - 10.1016/s0042-6989(98)00224-7
UR  - https://pubmed.ncbi.nlm.nih.gov/10343817/
ID  - 10343817
ER  -