TY - JOUR AU - Dai, Feng AU - Prymak, Andriy TI - On directional Whitney inequality JO - Canadian journal of mathematics PY - 2022 SP - 833 EP - 857 VL - 74 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/S0008414X21000110/ DO - 10.4153/S0008414X21000110 ID - 10_4153_S0008414X21000110 ER -