@book{rivlin:1969:iaf,
    author = {Rivlin, Theodore J.},
     title = {An Introduction to the Approximation of Functions},
 publisher = {Blaisdell Publishing Co. (Ginn and Co.)},
   address = {Waltham, MA-Toronto-London},
      year = {1969},
     pages = {viii+150},
   mrclass = {41.00},
  mrnumber = {MR0249885 (40 \#3126)},
mrreviewer = {E. W. Cheney},
      note = {Corrected reprint by Dover Publications, Inc., New York, 1981},
      isbn = {0-486-64069-8},
     zblno = {0189.06601}}