@article{MAN_1920__81_158816,
     author = {J.G. van der Corput},
     title = {\"Uber {Gitterpunkte} in der {Ebene}},
     journal = {Mathematische Annalen},
     pages = {1--20},
     publisher = {mathdoc},
     volume = {81},
     year = {1920},
     zbl = {47.0159.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1920__81_158816/}
}