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| 1993 | ||
|---|---|---|
| 2 | Jorn Andersen, Trygve Reenskaug: Operations on sets in an OODB. OOPS Messenger 4(1): 12-25 (1993) | |
| 1991 | ||
| 1 | Jorn Andersen, Trygve Reenskaug: Operations on sets in an OODB. OOPS Messenger 2(4): 26-39 (1991) | |
| 1 | Trygve Reenskaug | [1] [2] |
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