Andreas Jedlitschka Lionel C. Briand The Role of Controlled Experiments <i>Working Group Results</i>. 58-62 2006 conf/dagstuhl/2006esei Empirical Software Engineering Issues http://dx.doi.org/10.1007/978-3-540-71301-2_19 db/conf/dagstuhl/esei2006.html#JedlitschkaB06