@article{10_4064_aa_89_3_255_257,
     author = {Soma Gupta and Amitabha Tripathi},
     title = {Density of {M-sets} in arithmetic progression},
     journal = {Acta Arithmetica},
     pages = {255--257},
     publisher = {mathdoc},
     volume = {89},
     number = {3},
     year = {1999},
     doi = {10.4064/aa-89-3-255-257},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-89-3-255-257/}
}