@incollection{JEDP_1994____A2_0,
     author = {Ikawa, Mitsuru},
     title = {On zeta function and scattering poles for several convex bodies},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {2},
     pages = {1--14},
     publisher = {Ecole polytechnique},
     year = {1994},
     zbl = {0872.58048},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1994____A2_0/}
}