Original language | English |
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Pages (from-to) | 371-373 |
Journal | Proceedings of the Section of Sciences of the Koninklijke Nederlandse Akademie van Wetenschappen. Series A, mathematical sciences |
Volume | 54 |
Issue number | 5 |
Publication status | Published - 1951 |
A colour problem for infinite graphs and a problem in the theory of relations
N.G. Bruijn, de, P. Erdös
Research output: Contribution to journal › Article › Popular
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