TY  - JOUR
AU  - B. T. Rumov
TI  - Difference families, difference matrices, and BIB-designs
JO  - Matematičeskie zametki
PY  - 1985
SP  - 888
EP  - 899
VL  - 38
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1985_38_6_a9/
LA  - ru
ID  - MZM_1985_38_6_a9
ER  -