@article{10_4064_aa_5_1_35_44,
     author = {P Erd\"os and G. Lorentz},
     title = {On the probability that n and g(n) are relatively prime},
     journal = {Acta Arithmetica},
     pages = {35--44},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1959},
     doi = {10.4064/aa-5-1-35-44},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-5-1-35-44/}
}