00341nam a2200133 a 450000500170000002000150001708200190003210000060005111000160005724500610007326000320013430000210016671000200018720251203090448.0  a0891166726  a534.2,bD, ele  d_  aBowman, J.J  aElectromagnetic and acoustic scattering by simple shapes  aCambridgebHemispherec1987  axviii,728p, 22cm  aUslenghi, P.L.E