@article{10_4064_aa_7_4_417_420,
     author = {E. Cohen},
     title = {Arithmetical notes, {IX.} {On} the set of integers representable as a product of a prime and square},
     journal = {Acta Arithmetica},
     pages = {417--420},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1961},
     doi = {10.4064/aa-7-4-417-420},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-7-4-417-420/}
}