@article{MS2_1984__55_166907,
     author = {Lassi P\"aiv\"arinta},
     title = {A note on continuity of pseudodifferential operators in {Hardy} spaces.},
     journal = {Mathematica Scandinavica},
     pages = {91--94},
     publisher = {mathdoc},
     volume = {55},
     year = {1984},
     zbl = {0563.35084},
     url = {http://geodesic.mathdoc.fr/item/MS2_1984__55_166907/}
}