@book{apostol:1990:mfd,
    author = {Apostol, Tom M.},
     title = {Modular Functions and {D}irichlet Series in Number Theory},
    series = {Graduate Texts in Mathematics},
    volume = {41},
   edition = {2nd},
 publisher = {Springer-Verlag},
   address = {New York},
      year = {1990},
     pages = {x+204},
      isbn = {0-387-97127-0},
   mrclass = {11-01 (11Fxx 11Mxx)},
  mrnumber = {MR1027834 (90j:11001)},
     zblno = {0697.10023}}