TY  - JOUR
AU  - Mullin, R. C.
AU  - Nemeth, E.
TI  - On the Nonexistence of Orthogonal Steiner Systems of Order 9
JO  - Canadian mathematical bulletin
PY  - 1970
SP  - 131
EP  - 134
VL  - 13
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-028-2/
DO  - 10.4153/CMB-1970-028-2
ID  - 10_4153_CMB_1970_028_2
ER  -