Aufzählungslisten innerhalb einer Tabelle

\begin{longtable}{p{4cm}p{4cm}p{4cm}}
\hline
Aspect & ebXML & WSDL-based [URL='http://tigerente.htu.tuwien.ac.at:1026/']\\\hline[/URL]
Functional (work provided by the service, functional decomposition) &
\begin{itemize}
\item Bilateral Service Types
\begin{itemize}
\item Name
\item Informal Pre- And Post - Conditions
\item Sub - Services (Bpss:Collaborationactivity)
\item Interactions (Bpss:Businesstransactionactivity)
\end{itemize}
\item Multilateral Service Types
\end{itemize}
&
test [URL='http://tigerente.htu.tuwien.ac.at:1026/']\\\hline[/URL]
\end{longtable}

\begin{tabular}{|c|c|c|}
\hline
Aspect & ebXML & WSDL-based \\
\hline
Functional (work provided by the service, functional decomposition)
&
\begin{minipage}{10cm}
\begin{itemize}
\item Bilateral Service Types
\begin{itemize}
\item name
\item informal pre- and post - conditions
\item sub - services (bpss:CollaborationActivity)
\item interactions (bpss:BusinessTransactionActivity)
\end{itemize}
\item Multilateral Service Types
\end{itemize}
\end{minipage}
&
test \\
\hline
\end{tabular}