@article{schafke:1961:rb,
    author = {Sch{\"a}fke, Friedrich Wilhelm},
     title = {{R}eihenentwicklungen analytischer {F}unktionen nach
              {B}iorthogonalsystemen spezieller {F}unktionen. {II}},
   journal = {Math. Z.},
  fjournal = {Mathematische Zeitschrift},
    volume = {75},
      year = {1961},
     pages = {154–191},
      issn = {0025-5874},
   mrclass = {33.27},
  mrnumber = {MR0125256 (23 \#A2560)},
mrreviewer = {C. J. Bouwkamp},
       doi = {10.1007/BF01211018},
     zblno = {0098.04702}}