@mvbook{knuth:ct:related,
  author       = {Knuth, Donald E.},
  title        = {Computers \& Typesetting},
  date         = {1984/1986},
  volumes      = 5,
  publisher    = {Addison-Wesley},
  location     = {Reading, Mass.},
  langid       = {english},
  langidopts   = {variant=american},
  sorttitle    = {Computers & Typesetting},
  indexsorttitle= {Computers & Typesetting},
  related      = {knuth:ct:a,knuth:ct:b,knuth:ct:c,knuth:ct:d,knuth:ct:e},
  relatedtype  = {multivolume},
  annotation   = {A five-volume book cited as a whole and related to its
                  individual volumes. Note the \texttt{related} and
                  \texttt{relatedtype} fields},
}