@inproceedings{hansen2000isa,
  title={Invariance, Self-Adaptation and Correlated Mutations in Evolution Strategies},
  author={Hansen, N.},
  booktitle={Proceedings of PPSN VI, Parallel Problem Solving from Nature},
  editor={Schoenauer, M. and Deb, K. and Rudolph, G. and Yao, X. and Lutton, E. and Merelo, J.J. 
          and Schwefel, H.-P.},
  pages={355--364},
  publisher={Springer},
  year={2000}
}