@article{10_4064_aa_9_3_237_243,
     author = {J. Chalk},
     title = {A local criterion for the covering of space by convex bodies},
     journal = {Acta Arithmetica},
     pages = {237--243},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {1964},
     doi = {10.4064/aa-9-3-237-243},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-9-3-237-243/}
}