@inproceedings{cheng-jie2017ill-posedness,
  title={Ill-posedness of the Prandtl equations in Sobolev spaces around a shear flow with general decay},
  author={Cheng-Jie Liu, and Tong Yang},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224211042102525547},
  booktitle={Journal de Mathmatiques Pures et Appliques},
  volume={108},
  number={2},
  pages={150-162},
  year={2017},
}
             
            
                
Cheng-Jie Liu, and Tong Yang. Ill-posedness of the Prandtl equations in Sobolev spaces around a shear flow with general decay. 2017. Vol. 108. In Journal de Mathmatiques Pures et Appliques. pp.150-162. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224211042102525547.