@article{10_21136_CMJ_1963_100556,
     author = {Kr\'al, Josef},
     title = {A note on perimeter and measure},
     journal = {Czechoslovak Mathematical Journal},
     pages = {139--147},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1963},
     doi = {10.21136/CMJ.1963.100556},
     mrnumber = {0151579},
     zbl = {0116.27303},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100556/}
}