@article{knuth:1992:tnn,
    author = {Knuth, Donald E.},
     title = {Two notes on notation},
   journal = {Amer. Math. Monthly},
  fjournal = {The American Mathematical Monthly},
    volume = {99},
      year = {1992},
    number = {5},
     pages = {403–422},
      issn = {0002-9890},
     coden = {AMMYAE},
   mrclass = {05-01 (00A35)},
  mrnumber = {MR1163629 (93f:05001)},
mrreviewer = {W. D{\"o}rfler},
     links = {\URL[FullText]{http://links.jstor.org/sici?sici=0002-9890%28199205%2999%3A5%3C403%3ATNON%3E2.0.CO%3B2-Y}},
     zblno = {0785.05014}}