@InProceedings{hansen2004ecm,
  title     = {Evaluating the {CMA} Evolution Strategy on Multimodal Test Functions},
  author    = {Hansen, N. and Kern, S.},
  booktitle = {Parallel Problem Solving from Nature {PPSN VIII}},
  editor    = {Yao, X. and others}, 
  series    = {LNCS},
  volume    = {3242},
  pages     = {282--291},
  year      = {2004},
  publisher = {Springer},
}