Yang, Yichuan Strongly first Archimedean weakly isolated directed orderable groups. (English) Zbl 1232.06020 Int. Math. J. 4, No. 5, 465-468 (2003). Cited in 1 Document MSC: 06F15 Ordered groups PDFBibTeX XMLCite \textit{Y. Yang}, Int. Math. J. 4, No. 5, 465--468 (2003; Zbl 1232.06020)