Abstract
We show that Bush's bound for the maximum number of constraints in an orthogonal array of index unity is uniformly better than Rao's bound.
Citation
A. Hedayat. J. Stufken. "On the Maximum Number of Constraints in Orthogonal Arrays." Ann. Statist. 17 (1) 448 - 451, March, 1989. https://doi.org/10.1214/aos/1176347030
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