@article{MZ_1929__29_168060,
     author = {Philip Franklin},
     title = {Approximation theorems for generalized almost periodic functions},
     journal = {Mathematische Zeitschrift},
     pages = {70--86},
     publisher = {mathdoc},
     volume = {29},
     year = {1929},
     zbl = {54.0293.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__29_168060/}
}