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3. Autocorrelation and crosscorrelation techniques in EEG analysis;Barlow;Electroencephalog. Clin. Neurophysiol.,1961
4. The average reference electrode;Barthel;Am. J. EEG Technol.,1961
5. Scope and limitations of frequency analysis;Bickford;Electroencephalog. Clin. Neurophysiol.,1961