In most bibtex styles the information about url and the date when the web page has been accessed can be stored in the howpublished field (in free format).
A second alternative is to modify the itmalpha style to accommodate the two fields. The styles does not support url and lastchecked. Thus the first step is to insert these two fields in the ENTRY part of the style:
ENTRY
{ address
...
lastchecked
url
...
}
{}
{ label extra.label sort.label }
Then, we create a function to print the value of the fields. Thus we insert the following code in the file
FUNCTION {format.url.lastchecked}
{
url empty$
'skip$
{ "Available at: \url{" url * "}" *
lastchecked empty$
'skip$
{ "Accessed on: " lastchecked * }
if$
}
if$
}
Finally, we have to use the function at the appropriate position (in the definition of misc). We can replace the definition of misc with
FUNCTION {misc}
{ output.bibitem
author empty$ % added by R.Bless
{ format.editors output.nonnull } % added by R.Bless
{ format.authors "author" output.check } % added by R.Bless
if$
title howpublished new.block.checkb
format.title output
howpublished new.block.checka
howpublished output
organization output
institution output
format.date output
fin.entry
format.url.lastchecked output
new.block
note output
fin.entry
empty.misc.check
}
Instead of editing the itmalpha.sty file, please make a copy, edit it, and rename it (e.g. myitmalpha.sty).
PS I have used \url{} to wrap the value of the bibtex url field, this requires to load an appropriate style, e.g., url or hyperref.
biblatex, where you can control which fields are printed. – Guido Jan 03 '13 at 12:34biblatexis to redefine some macros. For example\renewbibmacro{finentry}{\printfield{url}, \printdate{urldate}}. You can look at chapter 4 of the manual, a good intro is at http://tex.stackexchange.com/questions/12806/guidelines-for-customizing-biblatex-styles. – Guido Jan 04 '13 at 07:22lastcheckedfield instead of theurldatefield.urldatewould be the correct use in my case. Then the solution would be here: http://tex.stackexchange.com/questions/56904/biblatex-verbose-urldate-is-getting-ignored – cherrung Jan 04 '13 at 10:03