@TECHREPORT{ChristyTR12,
  author = {Thomas Christy and Ludmila I. Kuncheva and 
      Kerry W. Williams},
  title = {Selection of physiological input modalities for emotion recognition},
  institution = {School of Computer Science, Bangor University, UK},
  year = {2012},
  number = {CS-TR-002-2012},
  url = {http://www.bangor.ac.uk/~mas00a/papers/tclkkwTR09.pdf}
}