Maayan Goldstein Dany Moshkovich System Grokking - A Novel Approach for Software Understanding, Validation, and Evolution. 38-49 2009 NGITS http://dx.doi.org/10.1007/978-3-642-04941-5_6 conf/ngits/2009 db/conf/ngits/ngits2009.html#GoldsteinM09