TY  - JOUR
AU  - Ebert, Gary L.
TI  - Blocking Sets in Projective Spaces
JO  - Canadian journal of mathematics
PY  - 1978
SP  - 856
EP  - 862
VL  - 30
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-074-7/
DO  - 10.4153/CJM-1978-074-7
ID  - 10_4153_CJM_1978_074_7
ER  -