\begin{thebibliography}{1}

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{ITU.TS} {R}ecommendation {X.901} | {ISO/IEC} 10746--1: {B}asic {R}eference
  {M}odel of {O}pen {D}istributed {P}rocessing {P}art 1: {O}verview and {G}uide
  to the use of the {R}eference {M}odel, July 1994.

\bibitem{odprm2}
{ITU.TS} {R}ecommendation {X.902} | {ISO/IEC} 10746--2: {B}asic {R}eference
  {M}odel of {O}pen {D}istributed {P}rocessing {P}art 2: {D}escriptive {M}odel,
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\bibitem{odprm3}
{ITU.TS} {R}ecommendation {X.903} | {ISO/IEC} 10746--3: {B}asic {R}eference
  {M}odel of {O}pen {D}istributed {P}rocessing {P}art 3: {P}rescriptive
  {M}odel, February 1994.

\bibitem{odprm4}
{ITU.TS} {R}ecommendation {X.904} | {ISO/IEC} 10746--4: {B}asic {R}eference
  {M}odel of {O}pen {D}istributed {P}rocessing {P}art 4: {A}rchitectural
  {S}emantics, 1994.

\bibitem{corba}
{Object Management Group (OMG), The Common Object Request Broker: Architecure
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\bibitem{aitrader}
A.~Puder.
\newblock {Introduction to the AI--Trader Project}.
\newblock http://\-www.vsb.informatik.uni--frankfurt.de/\-projects/\-aitrader/,
  Computer Science Department, University of Frankfurt, 1995.

\bibitem{puder:97a}
A.~Puder and K.~R\"omer.
\newblock {Using a Meta--Notation in a CORBA environment}.
\newblock In {\em {CORBA: Implementation, Use and Evaluation, ECOOP}},
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\bibitem{sowa:84}
J.F. Sowa.
\newblock {\em Conceptual Structures, information processing mind and machine}.
\newblock Addison--Wesley Publishing Company, 1984.

\end{thebibliography}
