@book{Knuth,
  author = {Donald E. Knuth},
  title = {The \TeX book},
  year = {1984},
  publisher = {Addison-Wesley Professional},
}

@book{Eijkhout,
  author = {Victor Eijkhout},
  title = {\TeX\ by Topic:
    A \TeX nician's Reference},
  year = {1992},
  publisher = {Addison-Wesley},
}