@article {Bruce2, editor = {Bruce, Brian R.}, title = {Editor{\textquoteright}s Letter}, volume = {4}, number = {3}, pages = {2--3}, year = {2013}, doi = {10.3905/jii.2013.4.3.002}, publisher = {Institutional Investor Journals Umbrella}, issn = {2154-7238}, URL = {https://jii.pm-research.com/content/4/3/2}, eprint = {https://jii.pm-research.com/content/4/3/2.full.pdf}, journal = {The Journal of Beta Investment Strategies} }