\Sort{
  Mode{on}
  Collation{mixed}
  SortTypeOrder{key,key,name}
  NameOrder{ascending}
  Key1{{author,editor}}
  KeyOrder1{ascending,nulls first}
  Key2{_none}
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@TECHREPORT{burke99optimizing,
  author = {J. V. Burke and A. S. Lewis and M. L. Overton},
  year = 1999,
  title = {Optimizing Matrix Stability},
  address = {Seattle, WA 98195},
  url = {citeseer.ist.psu.edu/article/burke99optimizing.html}
}
@MISC{burke-approximating,
  author = {J.V. Burke and A.S. Lewis and M.L. Overton},
  title = {Approximating subdifferentials by random sampling of gradients},
  url = {citeseer.ist.psu.edu/burke01approximating.html}
}
@ARTICLE{markus1983jordan,
  author = {A. Mar{K}us Ferr{\"u}s and E. Parilis},
  year = 1983,
  title = {The change of the Jordan form under small additive perturbations},
  journal = {Linear Algebra Appl.},
  volume = 234,
  pages = {415--427},
  note = {Nota buena},
  annote = {Este art\'{\i}culo es b\'asico.}
}
@INCOLLECTION{lewis96eigenvalue,
  author = {A. S. Lewis and M. L. Overton},
  year = 1996,
  title = {Eigenvalue Optimization},
  booktitle = {Acta Numerica},
  pages = {149--190},
  publisher = {Cambridge University Press},
  url = {citeseer.ist.psu.edu/lewis96eigenvalue.html}
}