@article{MAN_1981__257_163550,
     author = {Gilles Godefroy},
     title = {Propri\'et\'es de lissit\'e de certaines normes. {Applications} a la dualit\'e.},
     journal = {Mathematische Annalen},
     pages = {185--190},
     publisher = {mathdoc},
     volume = {257},
     year = {1981},
     zbl = {0471.46007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__257_163550/}
}