Rocco Oliveto Malcom Gethers Gabriele Bavota Denys Poshyvanyk Andrea De Lucia Identifying method friendships to remove the feature envy bad smell. 820-823 2011 ICSE http://doi.acm.org/10.1145/1985793.1985913 conf/icse/2011 db/conf/icse/icse2011.html#OlivetoGBPL11