@article{king:1973:gat,
    author = {King, B. J. and {Van Buren}, A. L.},
     title = {A general addition theorem for spheroidal wave functions},
   journal = {SIAM J. Math. Anal.},
    volume = {4},
      year = {1973},
    number = {1},
     pages = {149–160},
   mrclass = {33A55},
  mrnumber = {MR0328159 (48 \#6501)},
mrreviewer = {J. Meixner},
       doi = {10.1137/0504017},
     zblno = {0249.33011}}