TY - JOUR AU - Adam Osękowski TI - Sharp Weak-Type Inequality for the Haar System, Harmonic Functions and Martingales JO - Bulletin of the Polish Academy of Sciences. Mathematics PY - 2014 SP - 187 EP - 196 VL - 62 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ba62-2-7/ DO - 10.4064/ba62-2-7 LA - en ID - 10_4064_ba62_2_7 ER -