TY - RPRT TI - Shift in spatial scale in identifying crowded letters. AU - Susana T L Chung AU - Bosco S Tjan PY - 2007 DO - 10.1016/j.visres.2006.11.012 UR - https://pubmed.ncbi.nlm.nih.gov/17223153/ ID - 17223153 ER -