@inproceedings{lars1982$l$^{2}estimates,
title={$L$^{2}estimates for Fourier integral operators with complex phase},
author={Lars Hörmander},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203516233496400},
booktitle={Arkiv for Matematik},
volume={21},
number={1},
pages={283-307},
year={1982},
}
Lars Hörmander. $L$^{2}estimates for Fourier integral operators with complex phase. 1982. Vol. 21. In Arkiv for Matematik. pp.283-307. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203516233496400.