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@article{SF_1983__27_134626, author = {S.W. Margolis and J.H. Dinitz}, title = {Translational hulls and block designs.}, journal = {Semigroup forum}, pages = {247--264}, publisher = {mathdoc}, volume = {27}, year = {1983}, zbl = {0521.20049}, url = {http://geodesic.mathdoc.fr/item/SF_1983__27_134626/} }
S.W. Margolis; J.H. Dinitz. Translational hulls and block designs.. Semigroup forum, Tome 27 (1983), pp. 247-264. http://geodesic.mathdoc.fr/item/SF_1983__27_134626/