# How to disable biblatex showing “visited on” on the references

I'm writing a small article using luatex and Texstudio and biber:

\documentclass[11pt,a4paper]{article}
\usepackage[maxbibnames=3,style=chicago-authordate,backend=biber, url=false,doi=false, isbn=false]{biblatex}
\bibliography{}
\title{title}
\begin{document}
\maketitle
\section{Introduction}
First cite \parencite{Nichols2013}.
\printbibliography
\end{document}


Please copy the following code to a biblio.bib file.

@Article{Nichols2013,
author       = {Nichols, Melanie and Townsend, Nick and Scarborough, Peter and Rayner, Mike},
title        = {Trends in age-specific coronary heart disease mortality in the European Union over three decades: 1980–2009},
journaltitle = {European Heart Journal},
date         = {2013-10-14},
volume       = {34},
number       = {39},
pages        = {3017--3027},
issn         = {0195-668X},
doi          = {10.1093/eurheartj/eht159},
urldate      = {2017-11-07},
abstract     = {{AimsRecent} decades have seen very large declines in coronary heart disease ({CHD}) mortality across most of Europe, partly due to declines in risk factors such as smoking. },
file         = {Full Text PDF:C\:\\Users\\joe\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\ddxqcxys.default\\zotero\\storage\\TTNHMGPB\\Nichols et al. - 2013 - Trends in age-specific coronary heart disease mort.pdf:application/pdf;Snapshot:C\:\\Users\\joe\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\ddxqcxys.default\\zotero\\storage\\J4H4FEN4\\506081.html:text/html},
shortjournal = {Eur Heart J},
shorttitle   = {Trends in age-specific coronary heart disease mortality in the European Union over three decades},
}


When I compile the document I get this message "Visited on 11/07/2017 appears on the references even if I try to remove it.

There is a solution here
Do not show the "(visited on <date>)" on the references

url=false


But it doesn't work with my references and options.

There is a more complex solution:

\usepackage{xpatch}
\xpatchbibdriver{online}{urldate}{}{}{}


But it doesn't work either.

Strangely if I crate a simple reproducible example as :

\documentclass{article}
\usepackage[style=ieee,backend=biber, url=false, doi=false, isbn=false]{biblatex}
\usepackage{filecontents}

\begin{filecontents*}{\jobname.bib}
@Article{Nichols2013,
author       = {Nichols, Melanie and Townsend, Nick and Scarborough, Peter and Rayner, Mike},
title        = {Trends in age-specific coronary heart disease mortality in the European Union over three decades: 1980–2009},
journaltitle = {European Heart Journal},
date         = {2013-10-14},
volume       = {34},
number       = {39},
pages        = {3017--3027},
issn         = {0195-668X},
doi          = {10.1093/eurheartj/eht159},
urldate      = {2017-11-07},
abstract     = {{AimsRecent} decades have seen very .},
file         = {Full Text PDF:C\:\\Users\\joe\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\ddxqcxys.default\\zotero\\storage\\TTNHMGPB\\Nichols et al. - 2013 - Trends in age-specific coronary heart disease mort.pdf:application/pdf;Snapshot:C\:\\Users\\joe\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\ddxqcxys.default\\zotero\\storage\\J4H4FEN4\\506081.html:text/html},
shortjournal = {Eur Heart J},
shorttitle   = {Trends in age-specific coronary heart disease mortality in the European Union over three decades},
}
\end{filecontents*}

\bibliography{\jobname.bib}

\begin{document}
Test \parencite{Nichols2013}.
\printbibliography
\end{document}


I don't get the same problem. I just copied the content of that book there.

How can I solve this problem? My real bibliography is much larger and I get many of these visited on .... messages and more information I don't want.

The chicago-authordate style prints the "vistited on..." block whenever urlyear and urlmonth are not undefined. So you can prevent it by clearing both these fields.

\documentclass[conference]{IEEEtran}
\usepackage[maxbibnames=2,style=chicago-authordate,backend=biber, url=false, doi=false, isbn=false]{biblatex}

\AtEveryBibitem{
\clearfield{urlyear}
\clearfield{urlmonth}
}

\usepackage{filecontents}

\begin{filecontents*}{\jobname.bib}
@article{xiang_novel_2010,
title = {A Novel On-Chip Active Dispersive Delay Line ({DDL}) for Analog Signal Processing},
volume = {20},
issn = {1531-1309, 1558-1764},
url = {http://ieeexplore.ieee.org/document/5570896/},
doi = {10.1109/LMWC.2010.2064761},
abstract = {In this letter, we report the first on-chip design of an active dispersive delay line ({DDL}) based upon the distributed amplification structure. This distributed amplifier {DDL} exhibits nanosecond delay variation in the frequency band from 11 to 15 {GHz}. An on-chip temporal imager is implemented with this active {DDL} and a linear chirp generator, realized by ramping the control voltage of a voltage controlled oscillator. The experimental data exhibits pulse stretching as well as pulse compression with this system.},
pages = {584--586},
number = {10},
journaltitle = {{IEEE} Microwave and Wireless Components Letters},
author = {Xiang, Bo and Kopa, Anthony and Apsel, Alyssa B.},
urldate = {2016-10-19},
date = {2010-10},
langid = {english},
file = {[3]A Novel On-Chip Active Dispersive Delay.pdf:/home/defrancaferr_joa/Documents/rtacft/documents/zotero/storage/IDFNSDX4/[3]A Novel On-Chip Active Dispersive Delay.pdf:application/pdf}
}
\end{filecontents*}

\bibliography{\jobname.bib}

\begin{document}
Test \cite{xiang_novel_2010}.
\printbibliography
\end{document}

• Oh wow, you are quick. – moewe Nov 8 '17 at 21:16
• @moewe I had a head start as the author asked me in a comment to another answer :) – user36296 Nov 8 '17 at 21:20
• I see, though I have to admit so had I: github.com/plk/biblatex/issues/650 – moewe Nov 8 '17 at 21:21

This is a style-specific issue with biblatex-chicago's authordate style. That's why you can't reproduce it with style=ieee.

The style prints the URL access date even if the URL itself is suppressed.

You should probably notify the package author, in the meantime a fix is

\makeatletter
\renewbibmacro*{bib+doi+url}{% 16th ed.
\ifboolexpr{test {\iffieldundef{urlyear}} or test {\iffieldundef{url}} or not togl {cms@url}}%
{}%
{\printurldate}% Date fix
{\newunit\newblock}%
{\newcunit\newblock}%
\iftoggle{cms@doionly}%
{\iffieldundef{doi}%
{}%
{\printfield{doi}%
\clearfield{url}}}%
{\ifboolexpr{%
togl {cms@doi}%
and
not test {\iffieldundef{doi}}%
}%
{\printfield{doi}%
{}}%
\ifboolexpr{%
togl {cms@eprint}%
and
not test {\iffieldundef{eprint}}%
}%
{\usebibmacro{eprint}%