@article{JRAM_1957__197_150331,
     author = {Helmut Pl\"unnecke},
     title = {\"Uber ein metrisches {Problem} der additiven {Zahlentheorie.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {97--103},
     publisher = {mathdoc},
     volume = {197},
     year = {1957},
     zbl = {0077.05305},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1957__197_150331/}
}