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Constructions of nested group divisible designs. (English) Zbl 1270.05023

Summary: Some patterned methods of construction of nested group divisible (NGD) designs, starting from group divisible (NG) designs with two associate classes are described.

MSC:

05B15 Orthogonal arrays, Latin squares, Room squares
05B05 Combinatorial aspects of block designs
05E30 Association schemes, strongly regular graphs
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