@article{MS2_1993__73_2_167267,
     author = {Walter Rudin and Patrick Ahern},
     title = {Zero sets of functions in harmonic {Hardy} spaces.},
     journal = {Mathematica Scandinavica},
     pages = {209--214},
     publisher = {mathdoc},
     volume = {73},
     number = {2},
     year = {1993},
     zbl = {0820.31002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1993__73_2_167267/}
}