Miller JW, Blakely T, Schalk G, den Nijs M, Rao RPN, Ojemann JG. Three cases of feature correlation in an electrocorticographic BCI. Conf Proc IEEE Eng Med Biol Soc. 2008. pp. 5318-21. 

Leuthardt EC, Miller JW, Anderson NR, Schalk G, Dowling J, Miller JW, et al.. Electrocorticographic Frequency Alteration Mapping: A Clinical Technique for Mapping the Motor Cortex. Neurosurgery [Internet]. 2007;60(4 Suppl 2):260-70; discussion 270-1. http://www.ncbi.nlm.nih.gov/pubmed/17415162

Miller JW, Leuthardt EC, Schalk G, Rao RPN, Anderson NR, Moran D, et al.. Spectral Changes in Cortical Surface Potentials During Motor Movement. J Neurosci [Internet]. 2007;27(9):2424-32. http://www.ncbi.nlm.nih.gov/pubmed/17329441