@article{MS2_1964__15_165899,
     author = {Edwin Hewitt},
     title = {The {Ranges} of {Certain} {Convolution} {Operators.}},
     journal = {Mathematica Scandinavica},
     pages = {147--155},
     publisher = {mathdoc},
     volume = {15},
     year = {1964},
     zbl = {0135.36002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1964__15_165899/}
}