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Citation: L. Herman et R. Piziak, A numerical measure of commutativity for projections, TEX J SCI, 53(1), 2001, pp. 39-42

Authors: Piziak, R Odell, PL Hahn, R

Citation: R. Piziak et al., Constructing projections on sums and intersections, COMPUT MATH, 37(1), 1999, pp. 67-74