TY  - JOUR
AU  - Gibson, P. M.
TI  - Rank of the Sum of Certain Matrices
JO  - Canadian mathematical bulletin
PY  - 1971
SP  - 257
EP  - 257
VL  - 14
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-046-6/
DO  - 10.4153/CMB-1971-046-6
ID  - 10_4153_CMB_1971_046_6
ER  -