TY  - JOUR
AU  - Fejes G. Tóth
TI  - Covering the Plane with Two Kinds of Circles.
JO  - Discrete & computational geometry
PY  - 1995
SP  - 445
EP  - 458
VL  - 13
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131373/
ID  - DCG_1995__13_3-4_131373
ER  -