The Span of Letter Recognition of Good and Poor ReadersUNDERWOOD, N. R; ZOLA, D.Reading research quarterly. 1986, Vol 21, Num 1, pp 6-19, issn 0034-0553Article

Perceptual Span for Letter Distinctions during ReadingUNDERWOOD, N. R; MCCONKIE, G. W.Reading Research Quarterly Newark, Del. 1985, Vol 20, Num 2, espArticle

Some temporal characteristics of processing during readingMCCONKLE, G. W; UNDERWOOD, N. R; ZOLA, D et al.Journal of experimental psychology. Human perception and performance. 1985, Vol 11, Num 2, pp 168-186, issn 0096-1523Article