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ORCID"Directed packing and covering designs with block size four."
Ahmed M. Assaf, Nabil Shalaby, Jianxing Yin (2001)
- Ahmed M. Assaf, Nabil Shalaby, Jianxing Yin:
Directed packing and covering designs with block size four. Discret. Math. 238(1-3): 3-17 (2001)
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