J Exp Psychol Gen. 1989 Sep;118(3):258-79.
Grouping processes in visual search: effects with single- and combined-feature targets.
Humphreys GW, Quinlan PT, Riddoch MJ.
evidence for spatially parallel visual search for targets defined by combinations of form elements in visual search
PMID: 2527950
http://www.ncbi.nlm.nih.gov/pubmed/2527950
Grouping processes in visual search: effects with single- and combined-feature targets.
Humphreys GW, Quinlan PT, Riddoch MJ.
evidence for spatially parallel visual search for targets defined by combinations of form elements in visual search
PMID: 2527950
http://www.ncbi.nlm.nih.gov/pubmed/2527950