TY - JOUR AU - Tuomas Hytönen AU - Andreas Rosén TI - Bounded variation approximation of $L_p$ dyadic martingales and solutions to elliptic equations JO - Journal of the European Mathematical Society PY - 2018 SP - 1819 EP - 1850 VL - 20 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/800/ DO - 10.4171/jems/800 ID - JEMS_2018_20_8_a0 ER -