@article{AIHPC_2018__35_3_675_0,
     author = {Han, Qing and Wang, Guofang},
     title = {Hessian surfaces and local {Lagrangian} embeddings},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {675--685},
     publisher = {Elsevier},
     volume = {35},
     number = {3},
     year = {2018},
     doi = {10.1016/j.anihpc.2017.07.003},
     mrnumber = {3778647},
     zbl = {1385.53072},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2017.07.003/}
}