@article{shaw:1985:pdw,
    author = {Shaw, D. C.},
     title = {Perturbational results for diffraction of water-waves by
              nearly-vertical barriers},
   journal = {IMA J. Appl. Math.},
  fjournal = {IMA Journal of Applied Mathematics},
    volume = {34},
      year = {1985},
    number = {1},
     pages = {99–117},
      issn = {0272-4960},
     coden = {IJAMDM},
   mrclass = {76B15},
  mrnumber = {MR0785852 (86e:76019)},
       doi = {10.1093/imamat/34.1.99},
     zblno = {0569.76019}}