@article{10_4064_cm_60_61_1_1_14,
     author = {T. W. K\"orner},
     title = {Devil's staircases, ramps, humps and roller coasters},
     journal = {Colloquium Mathematicum},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {60},
     number = {1},
     year = {1990},
     doi = {10.4064/cm-60-61-1-1-14},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-1-1-14/}
}