@article{10_4064_sm_109_1_41_49,
     author = {Jacek Zienkiewicz},
     title = {Maximal estimates for nonsymmetric semigroups},
     journal = {Studia Mathematica},
     pages = {41--49},
     publisher = {mathdoc},
     volume = {109},
     number = {1},
     year = {1994},
     doi = {10.4064/sm-109-1-41-49},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-109-1-41-49/}
}