@article{MAN_1933__108_159651,
     author = {E. Hille and J.D. Tamarkin},
     title = {On the summability of {Fourier} series. {III.}},
     journal = {Mathematische Annalen},
     pages = {525--577},
     publisher = {mathdoc},
     volume = {108},
     year = {1933},
     zbl = {0007.06403},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__108_159651/}
}