Tobias Wagner Heike Trautmann Boris Naujoks OCD: Online Convergence Detection for Evolutionary Multi-Objective Algorithms Based on Statistical Testing. 198-215 2009 EMO http://dx.doi.org/10.1007/978-3-642-01020-0_19 conf/emo/2009 db/conf/emo/emo2009.html#WagnerTN09