@inproceedings{marius2012a,
  title={A NORMAL FORM THEOREM AROUND SYMPLECTIC LEAVES},
  author={Marius Crainic, and Ioan Marcut},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160914072515418330951},
  booktitle={Journal of Differential Geometry},
  volume={92},
  number={3},
  pages={417-461},
  year={2012},
}
             
            
                
Marius Crainic, and Ioan Marcut. A NORMAL FORM THEOREM AROUND SYMPLECTIC LEAVES. 2012. Vol. 92. In Journal of Differential Geometry. pp.417-461. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160914072515418330951.