by Crump, Kenny S., Van Landingham, Cynthia, Shamlaye, Conrad, Cox, Christopher, Davidson, Phillip W., Myers, Gary J., Clarkson, Thomas W.
Published in Environmental health perspectives (01.03.2000)

by Cox, Christopher, Breazna, Aurora, Davidson, Phillip W, Myers, Gary J, Clarkson, Thomas W
Published in JAMA : the journal of the American Medical Association (13.10.1999)

by Rockowitz, R J, Davidson, P W
Published in Journal of learning disabilities (01.01.1979)