@article{johansen:1979:fht,
    author = {Johansen, H. K. and S{\o}rensen, K.},
     title = {Fast {H}ankel transforms},
   journal = {Geophysical Prospecting},
    volume = {27},
      year = {1979},
    number = {4},
     pages = {876–901},
       doi = {10.1111/j.1365-2478.1979.tb01005.x}}