Sernadas, A., J. Fiadeiro, C. Sernadas, and H. - D. Ehrich,
"The Basic Building Blocks of Information Systems",
Information System Concepts: An In-Depth Analysis: North-Holland, Amsterdam, 1989, pp. 225-246, 1989.
Abstract
Sernadas, A., J. Fiadeiro, C. Sernadas, and H. - D. Ehrich,
"Abstract object types: A temporal perspective",
Proc. Colloq. on Temporal Logic in Specification, B. Banieqbal, H. Barringer, and A. Pnueli, editors: Springer LNCS 398, 1989.
Abstract
Saake, G., R. Jungclaus, and H. - D. Ehrich,
"Object-Oriented Specification and Stepwise Refinement",
Proc1 Open Distributed Processing, Berlin (D), 8.-11.\ Okt1 1991 (IFIP Transactions C: Communication Systems, Vol1 1): North-Holland, pp. 99-121, 1992.
Abstract
Saake, G., T. Hartmann, R. Jungclaus, and H. - D. Ehrich,
"Object-Oriented Design of Information Systems: \tt TROLL Language Features",
Advances in Database Systems, Implementations and Applications: Springer Verlag, Wien, CISM Courses and Lectures no. 347, pp. 219-245, 1994.
Abstract