@article{MZ_1955__63_169549,
     author = {Alfred Brauer},
     title = {On the {Schnirelmann} density of the sum of two sequences.},
     journal = {Mathematische Zeitschrift},
     pages = {529--541},
     publisher = {mathdoc},
     volume = {63},
     year = {1955},
     zbl = {0070.04103},
     url = {http://geodesic.mathdoc.fr/item/MZ_1955__63_169549/}
}