@book{wohlin12,
  Title                    = {{Experimentation in Software Engineering - An Introduction}},
  Author                   = {Wohlin, C. and Runeson, P. and {H\"ost}, M. and Ohlsson, M.C. and Regnell, B. and {Wessl\'en}, A.},
  Publisher                = {Kluwer Academic Publishers},
  Year                     = {2012},
  Keywords                 = {Empirical software engineering}
}