Martin Ph. (2000). Conventions and Notations for Knowledge Representation and Retrieval.
Proceedings of ICCS 2000 , 8th International Conference on Conceptual Structures
(Springer, LNAI 1867, pp. 41-54; electronically published on 1/1/2007), Darmstadt, Germany, August 14-18, 2000.  

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The "notations" related part of this article has been considerably extended in this ICCS 2002 article.