I am using the combine class to merge several tex files. Each of these files has a title with the name of the article, name of the author and the author's address and email id. Here is a sample of each article:
\documentclass[12pt]{amsart}
\usepackage{amssymb,amsmath,amsthm}
\title[xxx]{xxx}
\author{yyy}
\address{Department of zzz, www}
\email{abc@gmail.com}
\begin{document}
\maketitle
\begin{abstract}
...
\end{abstract}
...
\end{document}
Here is the text from the main document for the combine:
\documentclass[12pt]{combine}
\begin{document}
\pagestyle{combine}
\maketitle \tableofcontents
\clearpage
\begin{papers}
\coltoctitle{xxx}
\coltocauthor{yyy}
\label{abc}
\import{abc}
\end{papers}
\end{document}
When I try to compile the main combine file, I get the following error:
./abc.tex:Undefined control sequence \address
./abc.tex:Undefined control sequence \email
The individual articles do not give this error. Will be grateful for help on this! Thanks.
