TY  - JOUR
AU  - Marica, John
TI  - Orthogonal Families of Sets
JO  - Canadian mathematical bulletin
PY  - 1971
SP  - 573
EP  - 573
VL  - 14
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-104-6/
DO  - 10.4153/CMB-1971-104-6
ID  - 10_4153_CMB_1971_104_6
ER  -