\documentclass{combine}

\begin{filecontents}{import1.tex}
\documentclass{article}

\author{Leonardo da Vinci}
\title{Inventions}

\begin{document}
\maketitle

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut purus elit, vestibulum ut, placerat ac, adipiscing vitae, felis. Curabitur dictum gravida mauris. Nam arcu libero, nonummy eget, consectetuer id, vulputate a, magna. Donec vehicula augue eu neque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Mauris ut leo. 
\end{document}
\end{filecontents}

\begin{filecontents}{import2.tex}
\documentclass{article}

\author{Albert Einstein}
\title{Relativity}

\begin{document}
\maketitle

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut purus elit, vestibulum ut, placerat ac, adipiscing vitae, felis. Curabitur dictum gravida mauris. Nam arcu libero, nonummy eget, consectetuer id, vulputate a, magna. Donec vehicula augue eu neque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Mauris ut leo. 
\end{document}
\end{filecontents}


\pagestyle{combine}

\begin{document}

\tableofcontents
\begin{papers}

\coltoctitle{Inventions} % first article title into main ToC
\coltocauthor{Leonardo da Vinci} % first authors into main ToC
\label{import1}
\import{import1}

\coltoctitle{Realtivity} % first article title into main ToC
\coltocauthor{Albert Einstein} % first authors into main ToC
\label{import2}
\import{import2}
\end{papers}


\end{document}