@article{JEP_2016__3__1_0,
     author = {Laudenbach, Fran\c{c}ois and Meigniez, Ga\"el},
     title = {Haefliger structures and symplectic/contact~structures},
     journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques},
     pages = {1--29},
     year = {2016},
     publisher = {ole polytechnique},
     volume = {3},
     doi = {10.5802/jep.27},
     mrnumber = {3477863},
     zbl = {1358.57028},
     language = {en},
     url = {https://www.numdam.org/articles/10.5802/jep.27/}
}