@article{MZ_1965__90_170464,
     author = {G.O. Okikiolu},
     title = {On integral operators associated with the {Hilbert} transform.},
     journal = {Mathematische Zeitschrift},
     pages = {54--70},
     publisher = {mathdoc},
     volume = {90},
     year = {1965},
     zbl = {0131.11101},
     url = {http://geodesic.mathdoc.fr/item/MZ_1965__90_170464/}
}