TY  - JOUR
AU  - Porter, A. Duane
TI  - Systems of four equations with a matrix application in a finite field
JO  - Portugaliae mathematica
PY  - 1972
SP  - 121
EP  - 131
VL  - 31
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1972__31_3_115169/
LA  - en
ID  - PORMA_1972__31_3_115169
ER  -