Geodesic
Characterizations of absolute $F_{\sigma\delta}$-sets
Czechoslovak Mathematical Journal, Tome 48 (1998) no. 1, pp. 55-64 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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Classification : 54E15, 54E35, 54E50, 54H05
Keywords: metric space; $F_{\sigma \delta }$-set; bicomplete quasi-metric; complete sequence of covers; compact family of sets; cotopology 
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Junnila, H. J. K.; Künzi, H. P. A. Characterizations of absolute $F_{\sigma\delta}$-sets. Czechoslovak Mathematical Journal, Tome 48 (1998) no. 1, pp. 55-64. http://geodesic.mathdoc.fr/item/CMJ_1998_48_1_a4/

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