@article{10_4064_aa_9_2_191_207,
     author = {R. Bambah and C. Rogers and H. Zassenhaus},
     title = {On coverings with convex domains},
     journal = {Acta Arithmetica},
     pages = {191--207},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1964},
     doi = {10.4064/aa-9-2-191-207},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-9-2-191-207/}
}