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@article{DCG_1995__13_3-4_131373, author = {Fejes G. T\'oth}, title = {Covering the {Plane} with {Two} {Kinds} of {Circles.}}, journal = {Discrete & computational geometry}, pages = {445--458}, publisher = {mathdoc}, volume = {13}, number = {3-4}, year = {1995}, zbl = {0830.52009}, url = {http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131373/} }
Fejes G. Tóth. Covering the Plane with Two Kinds of Circles.. Discrete & computational geometry, Tome 13 (1995) no. 3-4, pp. 445-458. http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131373/