Row-column directed block designs
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D.G. Sarvate; R.C. Hamm
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Article
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1991
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Elsevier Science
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English
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A balanced incomplete block design (BIBD) is called a row-column directed BIBD (RCDBIBD) if: (i) it is directed in the usual sense,, i.e., each ordered pair of points occurs an equal number of times in the blocks (directed column wise), and (ii) the blocks are arranged in such a way that (a) each po