@article{10_4064_aa_43_2_177_190,
     author = {K. Wiertelak},
     title = {On the density of some sets of primes, {IV}},
     journal = {Acta Arithmetica},
     pages = {177--190},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {1983},
     doi = {10.4064/aa-43-2-177-190},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-43-2-177-190/}
}