@article{CRMATH_2012__350_7-8_407_0,
     author = {Moslehian, M.S. and Nabavi Sales, S.M.S. and Najafi, H.},
     title = {On the binary relation $ {\ensuremath{\leqslant}}_{u}$ on self-adjoint {Hilbert} space operators},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {407--410},
     publisher = {Elsevier},
     volume = {350},
     number = {7-8},
     year = {2012},
     doi = {10.1016/j.crma.2012.04.004},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2012.04.004/}
}