Ferrari, Fausto; Franchi, Bruno; Pajot, Hervé The geometric traveling salesman problem in the Heisenberg group. (English) Zbl 1142.28004 Rev. Mat. Iberoam. 23, No. 2, 437-480 (2007). Reviewer: Boris V. Loginov (Ul’yanovsk) MSC: 28A75 43A80 PDFBibTeX XMLCite \textit{F. Ferrari} et al., Rev. Mat. Iberoam. 23, No. 2, 437--480 (2007; Zbl 1142.28004) Full Text: DOI Euclid EuDML
Pestov, Vladimir Ramsey-Milman phenomenon, Urysohn metric spaces, and extremely amenable groups. (English) Zbl 1007.43001 Isr. J. Math. 127, 317-357 (2002). Reviewer: Eberhard Kaniuth (Paderborn) MSC: 43A07 54E35 57S05 PDFBibTeX XMLCite \textit{V. Pestov}, Isr. J. Math. 127, 317--357 (2002; Zbl 1007.43001) Full Text: DOI arXiv