by Perkin, George D, Wolinsky, Jerry S
Year of Publication 2006

by Perkin, George David, Sethi, Kapel, Muller, Bruce Ronald
Published in Journal of the neurological sciences (01.01.1983)

by Perkin, G D, Lees, A J, Stern, G M, Kocen, R S
Published in Canadian journal of neurological sciences (01.05.1978)

by Rail, David Leonard, Perkin, George David
Published in Archives of neurology (Chicago) (01.05.1980)