@article{MZ_1952__56_169292,
     author = {B.N. Prasad and U.N. Singh},
     title = {On the strong summability of the derived {Fourier} series and its conjugate series.},
     journal = {Mathematische Zeitschrift},
     pages = {280--288},
     publisher = {mathdoc},
     volume = {56},
     year = {1952},
     zbl = {0047.06904},
     url = {http://geodesic.mathdoc.fr/item/MZ_1952__56_169292/}
}