Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1996__121_3_178731, author = {J.M. Wills and S. Vassallo}, title = {Coverings {Sets} for {Plane} {Lattices.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {381--390}, publisher = {mathdoc}, volume = {121}, number = {3}, year = {1996}, zbl = {0853.52020}, url = {http://geodesic.mathdoc.fr/item/MOMA_1996__121_3_178731/} }
J.M. Wills; S. Vassallo. Coverings Sets for Plane Lattices.. Monatshefte für Mathematik, Tome 121 (1996) no. 3, pp. 381-390. http://geodesic.mathdoc.fr/item/MOMA_1996__121_3_178731/