0004-5411

Journal of the ACM (JOLACM) - Issue 233 论文列表

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卷期号: Issue 233
发布时间:
卷期年份: 2006
卷期官网:
本期论文列表
Conjunctive queries over trees.

On preservation under homomorphisms and unions of conjunctive queries.

Introduction.

A characterization of first-order topological properties of planar spatial data.