@techreport{Brown76-SOPHIE,
  author	= {Brown, J. S. and Rubinstein, R. and Burton, R.},
  year		= {1976},
  title		= {Reactive Learning Environment for Computer Assisted Electronics Instruction},
  number	= {BBN Report 3314},
  institution	= {Bolt Beranek and Newman, Inc., Cambridge, MA}
}