TY  - RPRT
TI  - Lower bounds for the rank and location of the Eigenvalues of a matrix 
AU  - Fan, Ky
AU  - Hoffman, A J
PY  - 1953
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 2246
DO  - 10.6028/NBS.RPT.2246
ER  -