@incollection{JEDP_1993____A14_0,
     author = {Strauss, Walter A.},
     title = {Smoothing of dispersive waves},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {14},
     pages = {1--5},
     publisher = {Ecole polytechnique},
     year = {1993},
     mrnumber = {94g:35061},
     zbl = {0818.35098},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1993____A14_0/}
}