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"Towards multi-level and modular conceptual schema specifications."
Ulrich Schiel et al. (1984)
- Ulrich Schiel, António L. Furtado, Erich J. Neuhold, Marco A. Casanova:
Towards multi-level and modular conceptual schema specifications. Inf. Syst. 9(1): 43-57 (1984)
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