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"A Relational Calculus with Set Operators, Its Safety and Equivalent ..."
Gultekin Özsoyoglu, Huaqing Wang (1989)
- Gultekin Özsoyoglu, Huaqing Wang:
A Relational Calculus with Set Operators, Its Safety and Equivalent Graphical Languages. IEEE Trans. Software Eng. 15(9): 1038-1052 (1989)
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