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Grannell, Mike J.; Griggs, Terry S. and Street, Anne Penfold
(2006).
DOI: https://doi.org/10.1007/s10623-006-0009-3
URL: http://mcs.open.ac.uk/mjg47/Papers/mdefb.pdf
Abstract
It is shown that in some cases it is possible to reconstruct a block design D uniquely from incomplete knowledge of a minimal defining set for D. This
surprising result has implications for the use of minimal defining sets in secret sharing schemes.