@article{koornwinder:1977:afl,
    author = {Koornwinder, Tom H.},
     title = {The addition formula for {L}aguerre polynomials},
   journal = {SIAM J. Math. Anal.},
    volume = {8},
      year = {1977},
    number = {3},
     pages = {535–540},
   mrclass = {33A65},
  mrnumber = {MR0454106 (56 \#12357)},
mrreviewer = {M. Mikolas},
       doi = {10.1137/0508041},
     zblno = {0361.33002}}