TY - JOUR AU - T. W. Körner TI - Devil's staircases, ramps, humps and roller coasters JO - Colloquium Mathematicum PY - 1990 SP - 1 EP - 14 VL - 60 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-1-1-14/ DO - 10.4064/cm-60-61-1-1-14 LA - en ID - 10_4064_cm_60_61_1_1_14 ER -