@article{volkmer:2004:fre,
    author = {Volkmer, Hans},
     title = {Four remarks on eigenvalues of {L}am\'e's equation},
   journal = {Anal. Appl. (Singap.)},
  fjournal = {Analysis and Applications},
    volume = {2},
      year = {2004},
    number = {2},
     pages = {161–175},
      issn = {0219-5305},
   mrclass = {33E10 (34B30)},
  mrnumber = {MR2053588 (2005e:33017)},
       doi = {10.1142/S0219530504000023},
     zblno = {1076.33014}}