@article{10_4064_aa_72_2_109_129,
     author = {Zhi Sun},
     title = {Covering the integers by arithmetic sequences},
     journal = {Acta Arithmetica},
     pages = {109--129},
     publisher = {mathdoc},
     volume = {72},
     number = {2},
     year = {1995},
     doi = {10.4064/aa-72-2-109-129},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-72-2-109-129/}
}