@article{10_4064_aa_79_4_353_359,
     author = {Paul Erd\H{o}s and Moshe Rosenfeld},
     title = {The factor-difference set of integers},
     journal = {Acta Arithmetica},
     pages = {353--359},
     publisher = {mathdoc},
     volume = {79},
     number = {4},
     year = {1997},
     doi = {10.4064/aa-79-4-353-359},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-79-4-353-359/}
}