@misc{buda2011life,
  title={Life time of correlation between stocks prices on established and emerging markets},
  author={Andrzej Buda},
  year={2011},
  eprint={1105.6272},
  archivePrefix={arXiv},
  primaryClass={q-fin.GN},
  url={https://arxiv.org/abs/1105.6272}
}