@article{10_4064_sm_44_1_27_30,
     author = {D. Przeworska-Rolewicz},
     title = {A characterization of commutators with {Hilbert} transforms},
     journal = {Studia Mathematica},
     pages = {27--30},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1972},
     doi = {10.4064/sm-44-1-27-30},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-44-1-27-30/}
}