Abstract
Orthogonal arrays can be regarded as natural generalizations of orthogonal Latin squares, and are useful in various problems of experimental design. In this paper the known upper bounds for the maximum possible number of constraints for arrays of strength 2 and 3 have been improved, and certain methods for constructing these arrays have been given.
Citation
R. C. Bose. K. A. Bush. "Orthogonal Arrays of Strength two and three." Ann. Math. Statist. 23 (4) 508 - 524, December, 1952. https://doi.org/10.1214/aoms/1177729331
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