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Semi-regular divisible designs and Frobenius groups Antonino Giorgio Spera OriginalPaper Pages: 285 - 294
Flocks of hyperbolic quadrics and linear groups containing homologies Arrigo BonisoliGábor Korchmáros OriginalPaper Pages: 295 - 309
Submanifolds in pseudo-Euclidean spaces satisfying the condition Δx=Ax+B Luis J. AlíasAngel FerrándezPascual Lucas OriginalPaper Pages: 345 - 354