Dietschmann, H. J. (1984). Representation and exchange of knowledge as a basis of information processes: Proceedings of the Fifth International Research Forum in Information Science (IRFIS 5), Heidelberg, F.R.G., September 5-7, 1983 ... North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co..

Dietschmann, Hans J. Representation and Exchange of Knowledge as a Basis of Information Processes: Proceedings of the Fifth International Research Forum in Information Science (IRFIS 5), Heidelberg, F.R.G., September 5-7, 1983 ... Amsterdam ; New York : New York, N.Y., U.S.A.: North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1984.

Dietschmann, Hans J. Representation and Exchange of Knowledge as a Basis of Information Processes: Proceedings of the Fifth International Research Forum in Information Science (IRFIS 5), Heidelberg, F.R.G., September 5-7, 1983 ... North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1984.