@article{elliott:1904:leg,
    author = {Elliott, E. B.},
     title = {A formula including {L}egendre's $EK'+KE'-KK'=\frac12\pi$},
   journal = {Messenger of Math.},
    volume = {33},
      year = {1903},
     pages = {31–32},
      note = {Errata on p. 45 of the same volume.},
     zblno = {34.0498.02}}