@incollection{JEDP_1992____A10_0,
     author = {Kappeler, Thomas},
     title = {Smoothing of dispersive waves},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {10},
     pages = {1--4},
     publisher = {Ecole polytechnique},
     year = {1992},
     mrnumber = {1191917},
     language = {en},
     url = {http://archive.numdam.org/item/JEDP_1992____A10_0/}
}