@article{1365314,
      recid = {1365314},
      author = {Hejhal, Dennis A.,},
      title = {Eigenvalues of the Laplacian for Hecke triangle groups /},
      pages = {1 online resource (177 pages) :},
      note = {"May 1992, Volume 97, Number 469 (end of volume)"--Cover.},
      url = {http://library.usi.edu/record/1365314},
}