TY  - JOUR
AU  - Oler, N.
TI  - Elements of Packing and Covering
JO  - Canadian mathematical bulletin
PY  - 1968
SP  - 671
EP  - 677
VL  - 11
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-080-1/
DO  - 10.4153/CMB-1968-080-1
ID  - 10_4153_CMB_1968_080_1
ER  -