TY  - JOUR
AU  - Jacek Zienkiewicz
TI  - Estimates for
  the Hardy–Littlewood maximal function
  on the Heisenberg group
JO  - Colloquium Mathematicum
PY  - 2005
SP  - 199
EP  - 205
VL  - 103
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm103-2-5/
DO  - 10.4064/cm103-2-5
LA  - en
ID  - 10_4064_cm103_2_5
ER  -