Sha, R. T.; Tang, D. T. A new class of automatic equalizers. (English) Zbl 0401.94003 IBM J. Res. Dev. 16, 556-566 (1972). MSC: 94A05 94A34 PDFBibTeX XMLCite \textit{R. T. Sha} and \textit{D. T. Tang}, IBM J. Res. Dev. 16, 556--566 (1972; Zbl 0401.94003) Full Text: DOI
Stanley, Terence E. Residual X-centrality in groups. (English) Zbl 0223.20028 Math. Z. 126, 1-5 (1972). MSC: 20E26 20E10 PDFBibTeX XMLCite \textit{T. E. Stanley}, Math. Z. 126, 1--5 (1972; Zbl 0223.20028) Full Text: DOI EuDML