@article{barnard:2001:ipe,
    author = {Barnard, Roger W. and Pearce, Kent and Schovanec, Lawrence},
     title = {Inequalities for the perimeter of an ellipse},
   journal = {J. Math. Anal. Appl.},
  fjournal = {Journal of Mathematical Analysis and Applications},
    volume = {260},
      year = {2001},
    number = {2},
     pages = {295–306},
      issn = {0022-247X},
     coden = {JMANAK},
   mrclass = {33C75 (33E05 52A40)},
  mrnumber = {MR1845555 (2002c:33012)},
mrreviewer = {Matti Vuorinen},
       doi = {10.1006/jmaa.2000.7128},
     zblno = {0985.26009}}