@article{10_4064_cm118_1_12,
     author = {Michael G. Cowling and Stefano Meda and Alberto G. Setti},
     title = {A weak type $(1,1)$ estimate for a maximal operator
 on a group of isometries of a homogeneous tree},
     journal = {Colloquium Mathematicum},
     pages = {223--232},
     publisher = {mathdoc},
     volume = {118},
     number = {1},
     year = {2010},
     doi = {10.4064/cm118-1-12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm118-1-12/}
}