@inproceedings{francesco2007schatten–von,
title={Schatten–von Neumann properties for Fourier integral operators with non-smooth symbols, I},
author={Francesco Concetti, and Joachim Toft},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203625052758958},
booktitle={Arkiv for Matematik},
volume={47},
number={2},
pages={295-312},
year={2007},
}
Francesco Concetti, and Joachim Toft. Schatten–von Neumann properties for Fourier integral operators with non-smooth symbols, I. 2007. Vol. 47. In Arkiv for Matematik. pp.295-312. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203625052758958.