@article{10_4064_aa_19_4_335_342,
     author = {J. Galambos},
     title = {On the speed of convergence of the {Oppenheim} series},
     journal = {Acta Arithmetica},
     pages = {335--342},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1971},
     doi = {10.4064/aa-19-4-335-342},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-19-4-335-342/}
}