Geodesic
On the metric space of all $N$-nets in a space of nonpositive curvature in the sense of Busemann
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (2006), pp. 74-77 Cet article a éte moissonné depuis la source Math-Net.Ru

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     title = {On the metric space of all $N$-nets in a space of nonpositive curvature in the sense of {Busemann}},
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E. N. Sosov. On the metric space of all $N$-nets in a space of nonpositive curvature in the sense of Busemann. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (2006), pp. 74-77. http://geodesic.mathdoc.fr/item/IVM_2006_6_a7/

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