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"The fine structure of threefold triple systems: u = 1 or 3 (mod 6)."
Charles J. Colbourn et al. (1991)
- Charles J. Colbourn, Rudolf Mathon, Alexander Rosa, Nabil Shalaby:
The fine structure of threefold triple systems: u = 1 or 3 (mod 6). Discret. Math. 92(1-3): 49-64 (1991)
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