TY  - JOUR
AU  - Zhao, Lin-Lin
AU  - Chen, Guo-Linag
AU  - Liu, Qing-Bin
TI  - Least squares (P,Q)-orthogonal symmetric solutions of the matrix equation and its optimal approximation
JO  - The electronic journal of linear algebra
PY  - 2010
SP  - 537
EP  - 551
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ELA_2010__20__a15/
LA  - en
ID  - ELA_2010__20__a15
ER  -