@article{AIHPC_1985__2_6_407_0,
     author = {Hofer, Helmut},
     title = {Lagrangian embeddings and critical point theory},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {407--462},
     publisher = {Gauthier-Villars},
     volume = {2},
     number = {6},
     year = {1985},
     mrnumber = {831040},
     zbl = {0591.58009},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1985__2_6_407_0/}
}