Nuwer M R, Daube J, Fischer C, Schramm J, Yingling C D
Department of Clinical Neurophysiology, Reed Neurological Center, University of California, Los Angeles 94024.
Electroencephalogr Clin Neurophysiol. 1993 Nov;87(5):263-76. doi: 10.1016/0013-4694(93)90179-y.