@inproceedings{antonios2002on,
title={On a covering problem related to the centered Hardy-Littlewood maximal inequality},
author={Antonios D. Melas},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203607954739817},
booktitle={Arkiv for Matematik},
volume={41},
number={2},
pages={341-361},
year={2002},
}
Antonios D. Melas. On a covering problem related to the centered Hardy-Littlewood maximal inequality. 2002. Vol. 41. In Arkiv for Matematik. pp.341-361. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203607954739817.