@article{fettis:1970:rmr,
    author = {Fettis, Henry E.},
     title = {On the reciprocal modulus relation for elliptic integrals},
   journal = {SIAM J. Math. Anal.},
    volume = {1},
      year = {1970},
    number = {4},
     pages = {524–526},
   mrclass = {33.19},
  mrnumber = {MR0289814 (44 \#7001)},
mrreviewer = {B. C. Carlson},
       doi = {10.1137/0501045},
     zblno = {0202.34202}}