@article{10_4064_sm_50_1_43_63,
     author = {Wolodymyr Madych},
     title = {On {Littlewood-Paley} functions},
     journal = {Studia Mathematica},
     pages = {43--63},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {1974},
     doi = {10.4064/sm-50-1-43-63},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-50-1-43-63/}
}