@article{barrientos_boussofiane_2005,  title={How efficient are pension fund managers in Chile?},  volume={9},  ISSN={1415-9848},  url={https://doi.org/10.1590/S1415-98482005000200003},  DOI={10.1590/S1415-98482005000200003},  number={2},  journal={Revista de Economia Contemporânea},  publisher={Instituto de Economia da Universidade Federal do Rio de Janeiro},  author={Barrientos, Armando and Boussofiane, Aziz},  year={2005},  month={May},  pages={289–311} }