@inproceedings{a.1933correction,
title={Correction},
author={A. S. Besicovitch},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203104903980532},
booktitle={Acta Mathematica},
volume={62},
number={1},
pages={317-318},
year={1933},
}