@article{volkmer:1998:cr,
    author = {Volkmer, Hans},
     title = {On the growth of convergence radii for the eigenvalues of the
              {M}athieu equation},
   journal = {Math. Nachr.},
  fjournal = {Mathematische Nachrichten},
    volume = {192},
      year = {1998},
     pages = {239–253},
      issn = {0025-584X},
   mrclass = {34B30 (33E05 33E10 34L40)},
  mrnumber = {MR1626348 (2000a:34053)},
mrreviewer = {M. E. Muldoon},
       doi = {10.1002/mana.19981920114},
     zblno = {0912.34027}}