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@article{COMIM_2007__15_1_a2, author = {Kijonka, V\'aclav}, title = {On relations between $f$-density and $(R)$-density}, journal = {Communications in Mathematics}, pages = {15--20}, publisher = {mathdoc}, volume = {15}, number = {1}, year = {2007}, mrnumber = {2418778}, zbl = {1235.11016}, language = {en}, url = {http://geodesic.mathdoc.fr/item/COMIM_2007__15_1_a2/} }
Kijonka, Václav. On relations between $f$-density and $(R)$-density. Communications in Mathematics, Tome 15 (2007) no. 1, pp. 15-20. http://geodesic.mathdoc.fr/item/COMIM_2007__15_1_a2/