@inproceedings{roman1997small,
title={Small angle scattering and$X$-ray transform in classical mechanics},
author={Roman G. Novikov},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555214782718},
booktitle={Arkiv for Matematik},
volume={37},
number={1},
pages={141-169},
year={1997},
}
Roman G. Novikov. Small angle scattering and$X$-ray transform in classical mechanics. 1997. Vol. 37. In Arkiv for Matematik. pp.141-169. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555214782718.