Geodesic
Cardinalities and ranks of $\pi$-bases in topological spaces
Commentationes Mathematicae Universitatis Carolinae, Tome 21 (1980) no. 4, pp. 769-776 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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Classification : 03E35, 54A25, 54A35, 54G10 
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Biryukov, Petr A. Cardinalities and ranks of $\pi$-bases in topological spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 21 (1980) no. 4, pp. 769-776. http://geodesic.mathdoc.fr/item/CMUC_1980_21_4_a12/

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[GN] G. GRUENHAGE P. NYIKOS: Spaces with bases of countable rank. Gen. Top. Appl. 8 (1978), No. 3. | MR

[J] I. JUHÁSZ: Cardinal functions in topology. Math. Centre Tracts 34, Amsterdam 1975. | MR

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