@inproceedings{john1968the,
title={The (φ,$k$) rectifiable subsets of a homogeneous space},
author={John E. Brothers},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203216855671072},
booktitle={Acta Mathematica},
volume={122},
number={1},
pages={197-229},
year={1968},
}