%0 Journal Article %A Zajíček, Luděk %T Porosity, derived numbers and knot points of typical continuous functions %J Czechoslovak Mathematical Journal %D 1989 %P 45-52 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102277/ %R 10.21136/CMJ.1989.102277 %G en %F 10_21136_CMJ_1989_102277