@book{jordan:1939:cfd,
    author = {Jordan, Charles},
     title = {Calculus of Finite Differences},
 publisher = {Hungarian Agent Eggenberger Book-Shop},
   address = {Budapest},
      year = {1939},
     pages = {xxi+654},
   mrclass = {42.3X},
  mrnumber = {MR0000441 (1,74e)},
mrreviewer = {W. E. Milne},
      note = {Third edition published in 1965 by Chelsea Publishing Co., New York, and  American Mathematical Society, AMS Chelsea Book Series, Providence, RI},
     zblno = {0060.12309}}