TY  - RPRT
TI  - A visual stimulator for orbiting light spots and equal energy annuli with continuously variable parameters.
AU  - J Molenaar
AU  - W A van de Grind
PY  - 1979
DO  - 10.1007/bf01474254
UR  - https://pubmed.ncbi.nlm.nih.gov/488218/
ID  - 488218
ER  -