Hughes, D. R. A note on difference sets. (English) Zbl 0066.38802 Proc. Am. Math. Soc. 6, 689-692 (1955). PDFBibTeX XMLCite \textit{D. R. Hughes}, Proc. Am. Math. Soc. 6, 689--692 (1955; Zbl 0066.38802) Full Text: DOI
Hughes, D. R. Additive and multiplicative loops of planar ternary rings. (English) Zbl 0066.38801 Proc. Am. Math. Soc. 6, 973-980 (1955). PDFBibTeX XMLCite \textit{D. R. Hughes}, Proc. Am. Math. Soc. 6, 973--980 (1955; Zbl 0066.38801) Full Text: DOI