@article{RCP25_1968__5__A1_0,
     author = {G\'erard, R.},
     title = {Introduction},
     journal = {Les rencontres physiciens-math\'ematiciens de Strasbourg -RCP25},
     eid = {1},
     pages = {i--iv},
     publisher = {Institut de Recherche Math\'ematique Avanc\'ee - Universit\'e Louis Pasteur},
     volume = {5},
     year = {1968},
     language = {fr},
     url = {http://archive.numdam.org/item/RCP25_1968__5__A1_0/}
}