@article{urn:eudml:doc:38660, title = {A lower bound of the norm of the operator X $\rightarrow$ AXB + BXA.}, journal = {Extracta Mathematicae}, volume = {16}, year = {2001}, pages = {223-227}, zbl = {1028.46091}, mrnumber = {MR1880106}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38660} }
Barraa, Mohamed; Boumazgour, Mohamed. A lower bound of the norm of the operator X → AXB + BXA.. Extracta Mathematicae, Tome 16 (2001) pp. 223-227. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38660/