LaTeX.org

Just now come to know that \aap is abbreviation of journal of astronomy and astrophysics.

This means that my program can not understand this abbreviation.
Can any of you through some light?

Hi Stefan,
Thank you for your kind reply.

Actually, I have made a .bib file using JabRef and then run bibtex which makes .bbl file . Now, the command line containing \aap is written in that .bbl file.
I do not know which package I should add which contain this command.

By the way, I am using ...

Hi all,

I have starated using latex since few weeks only so I am new to Latex.

When I run bibtex followed by latex it gives following error:

!undefined control sequence.
<recently read> \aap
1.13 \newblock \emph{\aap}......
?

I am using natbib package and plainnat.bst style.

Kindly help sorting ...