@article{10_21136_CMJ_1989_102277,
     author = {Zaj{\'\i}\v{c}ek, Lud\v{e}k},
     title = {Porosity, derived numbers and knot points of typical continuous functions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {45--52},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1989},
     doi = {10.21136/CMJ.1989.102277},
     mrnumber = {983482},
     zbl = {0672.26002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102277/}
}