BibTeX, biblatex and biber ⇒ URls shown twice with alphadin and natbib

[md42]

Hi
my Problem is the URLs in the Bibliography are shown twice.

Code: Select all

@misc{apache_software_foundation_maven_2009,
	title = {Maven - Introduction to the Build Lifecycle},
	url = {http://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html},
	author = {{{Apache} Software Foundation}},
	month = dec,
	year = {2009},
	howpublished = {http://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html}
}

Probably because url and howpublished are in in my Bib File.
When removing the howpublished it just work fine.
How can I configure using the alphadin/natbib Style but not showing the howpublished for @misc Type?
I attached a Minimal Working Example.

Greetings Martin

[md42]

Would creating an own makebst.tex File help?
Is there any easier way?

Greetings Martin

[olofos]

You could probably change the .bst to not use this field. But why do you have the same info twice in your bibtex database?

[md42]

having the same information twice is an Zotero Issue (the Program I use).
I also started to ask on the Zotero Forum.
http://forums.zotero.org/discussion/113 ... a-website/
Greetings Martin