@article{tricomi:1950:nul,
    author = {Tricomi, F. G.},
     title = {\NOOP{A}\"{U}ber die {A}bz\"ahlung der {N}ullstellen der konfluenten
              hypergeometrischen {F}unktionen},
   journal = {Math. Z.},
  fjournal = {Mathematische Zeitschrift},
    volume = {52},
      year = {1950},
     pages = {669–675},
  language = {German},
      issn = {0025-5874},
   mrclass = {33.0X},
  mrnumber = {MR0037407 (12,256k)},
mrreviewer = {A. Erd{\'e}lyi},
       doi = {10.1007/BF02230723},
     zblno = {0045.34502}}