Hypertext Links in Bibliographic References (Citations)

Subsections
If a report or a book that is cited (using the cite command) is available (or there is information about it) on the World-Wide Web, then it is possible to add the appropriate hypertext links in your bibliographic database (the .bib) file.



Here is an example of a bibliographic entry for the original LATEX [] blue book:

@string{tugURL="\htmladdnormallink
{http://www.tug.org/}{http://www.tug.org}"}

@string{danteURL="\htmladdnormallink
{http://www.dante.de/}{http://www.dante.de}"}

@book{lamp:latex,
title = "LaTeX User's Guide \& Reference Manual, 2nd edition",
year = 1994 ,
author = "Leslie Lamport",
Publisher = "Addison--Wesley Publishing Company, Inc.",
note = "Online information on {\TeX} and {\LaTeX} is available at "
 # tugURL # " and " # danteURL }
See the bibliographybiblio for how this will appear.
No other modifications are required; LATEX and BibTEX should work as normal. Note that it would be sensible to put the @string commands into a separate file, urls.bib say, loaded with the main file via
\bibliography{urls,...}.

The natbib package, written for LATEX by , provides even more flexibility in the way a reference may be cited. All the features of this packagenatbib are implemented for LATEX2HTML via the natbib.perl file. (Indeed there is even a mode whereby natbib handles the Harvard style of citation. This requires loading also the nharvard packagenharvard.)


Thanks... to for the bulk of the work in producing this extension, and to for necessary adjustments to allow it to work correctly with the document segmentation strategySegmentation.


hypercite

Analogous to hyperref is the hypercite command, which allows a free-form textual hyperlink to the bibliography, whereas the LATEX typeset version contains the usual citation code. The allowed syntax is as follows.
hypercite[int]{HTML-text}{LaTeX-text}{opt-LaTeX}{label}
hypercite[cite]{HTML-text}{LaTeX-text}{opt-LaTeX}{label}
hypercite{HTML-text}{LaTeX-text}{opt-LaTeX}{label}


hypercite[nocite]{HTML-text}{LaTeX-text}{label}
hypercite[no]{HTML-text}{LaTeX-text}{label}
hypercite[ext]{HTML-text}{LaTeX-text}{label}
The first three forms are equivalent; LATEX uses cite[opt-LaTeX]label , after placing the LaTeX-text. Note that {opt-LaTeX} must be specified, even if empty `{}'.

Similarly the latter three forms are equivalent, with LATEX using nocite{label} , to force the particular reference to appear on the bibliography page, even though no explicit marker is placed at this point. (Thus there is no need for an optional opt-LaTeX argument.)
Within the HTML version a hyperlink is produced when the HTML-text is not empty. External label files are also searched, in order to match the symbolic label, see also [page]externalciteexternalcite on page externcite.


Earlierhypcites in this manual the following source code was used:
commands described in the \LaTeX{} \htmlcite{blue book}{lamp:latex}, 
...
as well as many other \LaTeX{} constructions, such as are described in 
the \LaTeX{} \hypercite{\emph{Companion}}{\emph{Companion}}{}{goossens:latex} 
and \LaTeX{} \hypercite{\emph{Graphics Companion} (e.g.\ \Xy-pic)}%
{\emph{Graphics Companion}}{\Xy-pic}{goossens:latexGraphics};
which produces:
commands described in the LATEX blue booklamp:latex,
  ...
as well as many other LATEX constructions, such as are described in the LATEX CompanionCompaniongoossens:latex and LATEX Graphics Companion (e.g. XY-pic)Graphics CompanionXY-picgoossens:latexGraphics;
whereas in the LATEX typeset version one sees:
commands described in the LATEX blue book,
  ...
as well as many other LATEX constructions, such as are described in the LATEX Companion[2] and LATEX Graphics Companion[3, XY-pic];


htmlcite

Analogous to htmlref is the htmlcite command, which creates a textual hyperlink to a place on the document's bibliography page, but without displaying any reference marker in the LATEX typeset version. (See abovehyperciteXmpl for an example.)

The externalcite [page]commandcommand, described on page , externcite provides a similar facility when the bibliography page is “external”; that is, not part of the current document.