URL for "article" (and other) entries of the .bib file?

Question

My .bib file contains the following entry:

@Article{ LM11,
title = "Name of paper",
author = "Author A and Author B",
journal = "Arxiv",
year = "2011",
url = "http://arxiv.org/PS_cache/arxiv/pdf/..."

The problem: when compiling, the title/author/journal shows ok, the URL does not appear at all. Same goes with similar entry types (e.g. book)

The bibliography is included in the following two lines:

\bibliography{bib_filename}
\bibliographystyle{plain}

Answer 1

The plain bibliography style does not support the url field. Use e.g. the plainurl style instead (and load the url package).

\documentclass{article}

\usepackage{url}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@Article{ LM11,
title = "Name of paper",
author = "Author A and Author B",
journal = "Arxiv",
year = "2011",
url = "http://arxiv.org/PS_cache/arxiv/pdf/..."
}
\end{filecontents}

\begin{document}

Some text \cite{LM11}.

\bibliographystyle{plainurl}
\bibliography{\jobname}

\end{document}

(The filecontents environment is only used to include some external files directly into the example, so that it compiles. It is not necessary for the solution.)

Answer 2

I had the same problem, and ultimately the following worked for me, seemingly also to be the simplest solution (in a hosted environment where I could not alter bib styles):

\usepackage[square,sort,comma,numbers]{natbib}
\usepackage{url} 
\usepackage{hyperref}

...

\bibliographystyle{plainnat}
\bibliography{my_bib}

citing as:

\cite{Bacon:2000}

with a bib like:

@misc{Bacon:2000,
    author = {Crunchy Bacon},
    title = {Breakfast at Murphy's},
    month = {May},
    year = {2000},
    publisher = {Bacon Daily},
    note ={\url {http://www.dailybacon.com} (visited: 2014-11-09)}
}