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Erdős, P. On the combinatorial problems which I would most like to see solved. Combinatorica 1, 25–42 (1981). https://doi.org/10.1007/BF02579174
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AMS subject classification (1980)
- 05–02
- 05 C 65, 05 C 35, 05 C 15, 05 B 05, 05 C 55, 05 B 25, 05 B 15, 04 A 20, 10 A 99