@article{MZ_1951__55_169246,
     author = {R.P. jr. Boas},
     title = {Integrability of trigonometric series. {II.}},
     journal = {Mathematische Zeitschrift},
     pages = {183--186},
     publisher = {mathdoc},
     volume = {55},
     year = {1951},
     zbl = {0046.29603},
     url = {http://geodesic.mathdoc.fr/item/MZ_1951__55_169246/}
}