@article{10_14708_cm_v16i1_5733,
     author = {K. Wiertelak},
     title = {A note on the remainder term of the prime-number formula for arithmetical progressions},
     journal = {Commentationes Mathematicae},
     pages = { 149--157},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1972},
     doi = {10.14708/cm.v16i1.5733},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v16i1.5733/}
}