@inproceedings{sarah2001a,
title={A characterization of product$BMO$by commutators},
author={Sarah H. Ferguson, and Michael T. Lacey},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203340927171628},
booktitle={Acta Mathematica},
volume={189},
number={2},
pages={143-160},
year={2001},
}
Sarah H. Ferguson, and Michael T. Lacey. A characterization of product$BMO$by commutators. 2001. Vol. 189. In Acta Mathematica. pp.143-160. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203340927171628.